[Nexus 7 Q&A, Help & Troubleshooting] Fire-Dragon-DoL:
This morning I noticed that Nexus 7 was really "slow" on everything (yea maybe something was busying the CPU), so I simply decided to reboot. I pressed "Power Off" button and confirmed and I noticed it was updating 2 apps right when I pressed the confirm (app, no o.s. update). One of those app was google calendar (and I think this created the issue), anyway I've clearly read "Google calendar updated" before it completely shut down.

When I tried to turn it on again, it was stuck at X screen, trying to load, with this log from adb logcat:

I/Netd (14667): Netd 1.0 starting
W/InterfaceController(14667): Warning (Cannot load library: load_library(linker.cpp:745): library "/system/lib/libnetcmdiface.so" not found) while opening the net interface command library
I/mediaserver(14666): ServiceManager: 0x416f7e30
I/AudioFlinger(14666): Using default 3000 mSec as standby time.
I/CameraService(14666): CameraService started (pid=14666)
I/AudioPolicyManagerBase(14666): loadAudioPolicyConfig() loaded /system/etc/audio_policy.conf
I/AudioFlinger(14666): loadHwModule() Loaded primary audio interface from Grouper audio HW HAL (audio) handle 1
I/AudioFlinger(14666): HAL output buffer size 512 frames, normal mix buffer size 1024 frames
I/AudioMixer(14666): found effect "Multichannel Downmix To Stereo" from The Android Open Source Project
E/MonoPipe(14666): Failed to fetch local time frequency when constructing a MonoPipe (res = -32). getNextWriteTimestamp calls will be non-functional
D/MDnsDS (14667): MDnsSdListener::Hander starting up
D/MDnsDS (14667): MDnsSdListener starting to monitor
D/MDnsDS (14667): Going to poll with pollCount 1
D/AndroidRuntime(14884):
D/AndroidRuntime(14884): >>>>>> AndroidRuntime START com.android.internal.os.ZygoteInit <<<<<<
D/AndroidRuntime(14884): CheckJNI is OFF
D/dalvikvm(14884): Trying to load lib libjavacore.so 0x0
D/dalvikvm(14884): Added shared lib libjavacore.so 0x0
D/dalvikvm(14884): Trying to load lib libnativehelper.so 0x0
D/dalvikvm(14884): Added shared lib libnativehelper.so 0x0
I/SamplingProfilerIntegration(14884): Profiling disabled.
I/Zygote (14884): Preloading classes...
D/dalvikvm(14884): GC_EXPLICIT freed 36K, 9% free 419K/460K, paused 1ms+1ms, total 3ms
D/dalvikvm(14884): GC_EXPLICIT freed 4K, 5% free 489K/512K, paused 1ms+1ms, total 3ms
D/dalvikvm(14884): Note: class Landroid/app/ActivityManagerNative; has 157 unimplemented (abstract) methods
D/dalvikvm(14884): GC_EXPLICIT freed 21K, 5% free 528K/556K, paused 0ms+0ms, total 2ms
D/dalvikvm(14884): GC_EXPLICIT freed 27K, 6% free 556K/588K, paused 1ms+0ms, total 3ms
W/Zygote (14884): Class not found for preloading: android.bluetooth.BluetoothAudioGateway
W/Zygote (14884): Class not found for preloading: android.bluetooth.HeadsetBase
W/Zygote (14884): Class not found for preloading: undroid.content.AbstractThreadedSyncAdapter$SyncThread
D/dalvikvm(14884): GC_EXPLICIT freed 24K, 5% free 605K/632K, paused 0ms+1ms, total 3ms
D/dalvikvm(14884): GC_EXPLICIT freed 26K, 5% free 633K/664K, paused 0ms+1ms, total 3ms
D/dalvikvm(14884): GC_EXPLICIT freed 60K, 8% free 734K/796K, paused 0ms+0ms, total 3ms
D/dalvikvm(14884): GC_EXPLICIT freed 31K, 5% free 759K/796K, paused 1ms+0ms, total 4ms
D/TextLayoutCache(14884): Using debug level = 0 - Debug Enabled = 0
D/dalvikvm(14884): GC_EXPLICIT freed 18K, 3% free 796K/816K, paused 0ms+0ms, total 5ms
I/dalvikvm(14884): threadid=1: recursive native library load attempt (/system/lib/libmedia_jni.so)
D/MtpDeviceJNI(14884): register_android_mtp_MtpDevice
I/dalvikvm(14884): threadid=1: recursive native library load attempt (/system/lib/libmedia_jni.so)
I/dalvikvm(14884): threadid=1: recursive native library load attempt (/system/lib/libmedia_jni.so)
D/dalvikvm(14884): GC_EXPLICIT freed 15K, 2% free 839K/856K, paused 1ms+1ms, total 5ms
D/dalvikvm(14884): GC_FOR_ALLOC freed 219K, 17% free 1131K/1352K, paused 7ms, total 7ms
D/dalvikvm(14884): GC_EXPLICIT freed 276K, 18% free 1283K/1564K, paused 1ms+1ms, total 9ms
F/libc (14884): Fatal signal 11 (SIGSEGV) at 0xe551c4ac (code=1), thread 14884 (zygote)
I/DEBUG ( 124): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
I/DEBUG ( 124): Build fingerprint: 'google/nakasi/grouper:4.2.2/JDQ39/573038:user/release-keys'
I/DEBUG ( 124): Revision: '0'
I/DEBUG ( 124): pid: 14884, tid: 14884, name: zygote >>> zygote <<<
I/DEBUG ( 124): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr e551c4ac
I/DEBUG ( 124): r0 410e6ae8 r1 a07f0505 r2 6355b028 r3 6355b098
I/DEBUG ( 124): r4 61daf2d8 r5 41d82360 r6 410e6ae8 r7 651258b4
I/DEBUG ( 124): r8 bee62714 r9 6308cd40 sl 00000000 fp 00000038
I/DEBUG ( 124): ip 00000004 sp bee626b8 lr 40819f2f pc 408069cc cpsr 00000030
I/DEBUG ( 124): d0 0000000018960975 d1 000000f65944a9fa
I/DEBUG ( 124): d2 000000f65947f5ba d3 0000000000000000
I/DEBUG ( 124): d4 0000000000000000 d5 000000000006e400
I/DEBUG ( 124): d6 0018700000000963 d7 000000524cfa9fc4
I/DEBUG ( 124): d8 0000000000000000 d9 0000000000000000
I/DEBUG ( 124): d10 0000000000000000 d11 0000000000000000
I/DEBUG ( 124): d12 0000000000000000 d13 0000000000000000
I/DEBUG ( 124): d14 0000000000000000 d15 0000000000000000
I/DEBUG ( 124): d16 0000000018995535 d17 0000000018960975
I/DEBUG ( 124): d18 3f8948b0fcd6e9e0 d19 40026bb1bbb55516
I/DEBUG ( 124): d20 4008000000000000 d21 3fbc71c71c71c71c
I/DEBUG ( 124): d22 3fcc7288e957b53b d23 3fd24998d6307188
I/DEBUG ( 124): d24 3fd99a27ad32ddf5 d25 3fe555b0aaeac752
I/DEBUG ( 124): d26 0000000000000000 d27 0000000000000000
I/DEBUG ( 124): d28 0000000000000005 d29 0000000000000000
I/DEBUG ( 124): d30 0000000000000000 d31 0000000000000000
I/DEBUG ( 124): scr 60000010
I/DEBUG ( 124):
I/DEBUG ( 124): backtrace:
I/DEBUG ( 124): #00 pc 000569cc /system/lib/libdvm.so (dexStringById(DexFile const*, unsigned int)+3)
I/DEBUG ( 124): #01 pc 00069f2b /system/lib/libdvm.so
I/DEBUG ( 124): #02 pc 0006a3fb /system/lib/libdvm.so
I/DEBUG ( 124): #03 pc 0006a79f /system/lib/libdvm.so (dvmFindClassNoInit(char const*, Object*)+214)
I/DEBUG ( 124): #04 pc 000645e5 /system/lib/libdvm.so (dvmFindClassByName(StringObject*, Object*, bool)+84)
I/DEBUG ( 124): #05 pc 00066bc1 /system/lib/libdvm.so
I/DEBUG ( 124): #06 pc 000276a0 /system/lib/libdvm.so
I/DEBUG ( 124): #07 pc 0002b57c /system/lib/libdvm.so (dvmInterpret(Thread*, Method const*, JValue*)+184)
I/DEBUG ( 124): #08 pc 0005fc31 /system/lib/libdvm.so (dvmCallMethodV(Thread*, Method const*, Object*, bool, JValue*, std::__va_list)+272)
I/DEBUG ( 124): #09 pc 0005fc5b /system/lib/libdvm.so (dvmCallMethod(Thread*, Method const*, Object*, JValue*, ...)+20)
I/DEBUG ( 124): #10 pc 0006a735 /system/lib/libdvm.so (dvmFindClassNoInit(char const*, Object*)+108)
I/DEBUG ( 124): #11 pc 0006ae17 /system/lib/libdvm.so (dvmFindClass(char const*, Object*)+2)
I/DEBUG ( 124): #12 pc 000645df /system/lib/libdvm.so (dvmFindClassByName(StringObject*, Object*, bool)+78)
I/DEBUG ( 124): #13 pc 00066575 /system/lib/libdvm.so
I/DEBUG ( 124): #14 pc 000276a0 /system/lib/libdvm.so
I/DEBUG ( 124): #15 pc 0002b57c /system/lib/libdvm.so (dvmInterpret(Thread*, Method const*, JValue*)+184)
I/DEBUG ( 124): #16 pc 0005fc31 /system/lib/libdvm.so (dvmCallMethodV(Thread*, Method const*, Object*, bool, JValue*, std::__va_list)+272)
I/DEBUG ( 124): #17 pc 000499fb /system/lib/libdvm.so
I/DEBUG ( 124): #18 pc 00046871 /system/lib/libandroid_runtime.so
I/DEBUG ( 124): #19 pc 00047533 /system/lib/libandroid_runtime.so (android::AndroidRuntime::start(char const*, char const*)+390)
I/DEBUG ( 124): #20 pc 00000db7 /system/bin/app_process
I/DEBUG ( 124): #21 pc 0001271f /system/lib/libc.so (__libc_init+38)
I/DEBUG ( 124): #22 pc 00000ae8 /system/bin/app_process
I/DEBUG ( 124):
I/DEBUG ( 124): stack:
I/DEBUG ( 124): bee62678 400c037c
I/DEBUG ( 124): bee6267c 41d82360 /dev/ashmem/dalvik-heap (deleted)
I/DEBUG ( 124): bee62680 00000003
I/DEBUG ( 124): bee62684 400c0010
I/DEBUG ( 124): bee62688 0015f3e9
I/DEBUG ( 124): bee6268c 41d82360 /dev/ashmem/dalvik-heap (deleted)
I/DEBUG ( 124): bee62690 4085e1b0 /system/lib/libdvm.so
I/DEBUG ( 124): bee62694 41c2df40 [heap]
I/DEBUG ( 124): bee62698 4085e1b0 /system/lib/libdvm.so
I/DEBUG ( 124): bee6269c 400c0010
I/DEBUG ( 124): bee626a0 63edc3e8 /system/framework/framework.odex
I/DEBUG ( 124): bee626a4 4080d6e5 /system/lib/libdvm.so
I/DEBUG ( 124): bee626a8 63edc3e8 /system/framework/framework.odex
I/DEBUG ( 124): bee626ac 63edc3ed /system/framework/framework.odex
I/DEBUG ( 124): bee626b0 df0027ad
I/DEBUG ( 124): bee626b4 00000000
I/DEBUG ( 124): #00 bee626b8 41d82360 /dev/ashmem/dalvik-heap (deleted)
I/DEBUG ( 124): ........ ........
I/DEBUG ( 124): #01 bee626b8 41d82360 /dev/ashmem/dalvik-heap (deleted)
I/DEBUG ( 124): bee626bc 4085e1b0 /system/lib/libdvm.so
I/DEBUG ( 124): bee626c0 00000001
I/DEBUG ( 124): bee626c4 636b8b24 /system/framework/framework.odex
I/DEBUG ( 124): bee626c8 63f82000 /dev/ashmem/dalvik-aux-structure (deleted)
I/DEBUG ( 124): bee626cc 4081a3ff /system/lib/libdvm.so
I/DEBUG ( 124): #02 bee626d0 bee62714 [stack]
I/DEBUG ( 124): bee626d4 4081aebd /system/lib/libdvm.so
I/DEBUG ( 124): bee626d8 63bc34bd /system/framework/framework.odex
I/DEBUG ( 124): bee626dc 41c75f60 /dev/ashmem/dalvik-heap (deleted)
I/DEBUG ( 124): bee626e0 00000012
I/DEBUG ( 124): bee626e4 00000000
I/DEBUG ( 124): bee626e8 635fc3cc /system/framework/framework.odex
I/DEBUG ( 124): bee626ec 00000004
I/DEBUG ( 124): bee626f0 0035ef7b
I/DEBUG ( 124): bee626f4 400c0010
I/DEBUG ( 124): bee626f8 410e6ae8
I/DEBUG ( 124): bee626fc 6308cd40
I/DEBUG ( 124): bee62700 61ca88d8 /dev/ashmem/dalvik-LinearAlloc (deleted)
I/DEBUG ( 124): bee62704 63e004a9 /system/framework/framework.odex
I/DEBUG ( 124): bee62708 63e004bf /system/framework/framework.odex
I/DEBUG ( 124): bee6270c 63edc3f2 /system/framework/framework.odex
I/DEBUG ( 124): ........ ........
I/DEBUG ( 124):
I/DEBUG ( 124): memory near r0:
I/DEBUG ( 124): 410e6ac8 6d617266 726f7765 72662f6b 77656d61
I/DEBUG ( 124): 410e6ad8 2e6b726f 7865646f 08001400 0000003b
I/DEBUG ( 124): 410e6ae8 6355b000 6355b028 6355b098 635ae3e0
I/DEBUG ( 124): 410e6af8 635d802c 6362dcdc 635b4aac 636a51a4
I/DEBUG ( 124): 410e6b08 6355b028 63e3cc78 63e6cc88 6355b028
I/DEBUG ( 124): 410e6b18 00000000 0000002b 62fd9840 00000080
I/DEBUG ( 124): 410e6b28 62fd9838 00000000 00000000 00000000
I/DEBUG ( 124): 410e6b38 00000000 00000000 6f632f6b 00000033
I/DEBUG ( 124): 410e6b48 0000000d 00003f8a 6346ef8a 000000bc
I/DEBUG ( 124): 410e6b58 6346e000 00001046 00000003 00000008
I/DEBUG ( 124): 410e6b68 410e6a78 410e6ac0 63f82000 00000033
I/DEBUG ( 124): 410e6b78 7379732f 2f6d6574 6d617266 726f7765
I/DEBUG ( 124): 410e6b88 65742f6b 6870656c 2d796e6f 6d6d6f63
I/DEBUG ( 124): 410e6b98 6a2e6e6f 1f007261 001ba78e 0000002b
I/DEBUG ( 124): 410e6ba8 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 410e6bb8 640640d4 00000009 6406410f 00000014
I/DEBUG ( 124):
I/DEBUG ( 124): memory near r1:
I/DEBUG ( 124): a07f04e4 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124): a07f04f4 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124): a07f0504 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124): a07f0514 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124): a07f0524 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124): a07f0534 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124): a07f0544 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124): a07f0554 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124): a07f0564 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124): a07f0574 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124): a07f0584 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124): a07f0594 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124): a07f05a4 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124): a07f05b4 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124): a07f05c4 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124): a07f05d4 ffffffff ffffffff ffffffff ffffffff
I/DEBUG ( 124):
I/DEBUG ( 124): memory near r2:
I/DEBUG ( 124): 6355b008 00000028 008e1b54 008e1b80 000000ed
I/DEBUG ( 124): 6355b018 008e1c70 0010f568 00000000 22dc6789
I/DEBUG ( 124): 6355b028 0a786564 00353330 95bd3979 48fd820f
I/DEBUG ( 124): 6355b038 cca55083 0d7c12c2 5fedf8b5 49ee0aca
I/DEBUG ( 124): 6355b048 008e1b54 00000070 12345678 00000000
I/DEBUG ( 124): 6355b058 00000000 008e1a84 00014cd2 00000070
I/DEBUG ( 124): 6355b068 000019b3 000533b8 00002f20 00059a84
I/DEBUG ( 124): 6355b078 0000ab96 0007d004 0000ee99 000d2cb4
I/DEBUG ( 124): 6355b088 0000156f 0014a17c 0076cbf8 00174f5c
I/DEBUG ( 124): 6355b098 005771a8 005771aa 005771ae 005771b1
I/DEBUG ( 124): 6355b0a8 005771b4 005771c9 005771cd 005771d5
I/DEBUG ( 124): 6355b0b8 005771e4 005771e7 005771ed 00577206
I/DEBUG ( 124): 6355b0c8 0057720a 0057720e 00577213 0057721a
I/DEBUG ( 124): 6355b0d8 0057722e 00577246 0057724e 00577256
I/DEBUG ( 124): 6355b0e8 00577262 0057726a 0057727c 00577293
I/DEBUG ( 124): 6355b0f8 005772a0 005772ae 005772c1 005772cc
I/DEBUG ( 124):
I/DEBUG ( 124): memory near r3:
I/DEBUG ( 124): 6355b078 0000ab96 0007d004 0000ee99 000d2cb4
I/DEBUG ( 124): 6355b088 0000156f 0014a17c 0076cbf8 00174f5c
I/DEBUG ( 124): 6355b098 005771a8 005771aa 005771ae 005771b1
I/DEBUG ( 124): 6355b0a8 005771b4 005771c9 005771cd 005771d5
I/DEBUG ( 124): 6355b0b8 005771e4 005771e7 005771ed 00577206
I/DEBUG ( 124): 6355b0c8 0057720a 0057720e 00577213 0057721a
I/DEBUG ( 124): 6355b0d8 0057722e 00577246 0057724e 00577256
I/DEBUG ( 124): 6355b0e8 00577262 0057726a 0057727c 00577293
I/DEBUG ( 124): 6355b0f8 005772a0 005772ae 005772c1 005772cc
I/DEBUG ( 124): 6355b108 005772e2 005772f0 005772ff 00577309
I/DEBUG ( 124): 6355b118 00577318 00577325 0057732e 00577340
I/DEBUG ( 124): 6355b128 00577354 00577360 0057736d 00577376
I/DEBUG ( 124): 6355b138 00577395 005773a1 005773a6 005773c3
I/DEBUG ( 124): 6355b148 005773d3 005773fa 0057741a 00577431
I/DEBUG ( 124): 6355b158 0057744a 0057745a 0057747b 00577495
I/DEBUG ( 124): 6355b168 0057749e 005774b1 005774b4 005774b8
I/DEBUG ( 124):
I/DEBUG ( 124): memory near r4:
I/DEBUG ( 124): 61daf2b8 000015fa 63bb3443 6355b03c 00000000
I/DEBUG ( 124): 61daf2c8 00000000 00000000 63edc3e8 00000000
I/DEBUG ( 124): 61daf2d8 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 61daf2e8 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 61daf2f8 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 61daf308 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 61daf318 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 61daf328 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 61daf338 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 61daf348 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 61daf358 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 61daf368 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 61daf378 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 61daf388 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 61daf398 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 61daf3a8 00000000 00000000 00000000 00000000
I/DEBUG ( 124):
I/DEBUG ( 124): memory near r5:
I/DEBUG ( 124): 41d82340 41c3d168 00000000 41d7a958 41d82320
I/DEBUG ( 124): 41d82350 00000000 9d19e895 00000000 000000c3
I/DEBUG ( 124): 41d82360 41c2e1e8 00000000 00000000 00000000
I/DEBUG ( 124): 41d82370 00000000 00000000 63b40c31 00000000
I/DEBUG ( 124): 41d82380 00030011 5000059a 63f82000 00000001
I/DEBUG ( 124): 41d82390 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 41d823a0 00000000 00000000 000015f0 00000000
I/DEBUG ( 124): 41d823b0 00000000 00000000 00000001 61daf280
I/DEBUG ( 124): 41d823c0 00000004 61daf2a0 00000000 00000000
I/DEBUG ( 124): 41d823d0 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 41d823e0 00000000 00000000 00000001 00000000
I/DEBUG ( 124): 41d823f0 61daf288 00000000 00000000 00000001
I/DEBUG ( 124): 41d82400 41d82360 63af61e6 63b42af0 00000019
I/DEBUG ( 124): 41d82410 00000000 00000000 000000c0 0000006b
I/DEBUG ( 124): 41d82420 41c2f950 00000000 0000002a 00000000
I/DEBUG ( 124): 41d82430 006c0041 006f0067 00690072 00680074
I/DEBUG ( 124):
I/DEBUG ( 124): memory near r6:
I/DEBUG ( 124): 410e6ac8 6d617266 726f7765 72662f6b 77656d61
I/DEBUG ( 124): 410e6ad8 2e6b726f 7865646f 08001400 0000003b
I/DEBUG ( 124): 410e6ae8 6355b000 6355b028 6355b098 635ae3e0
I/DEBUG ( 124): 410e6af8 635d802c 6362dcdc 635b4aac 636a51a4
I/DEBUG ( 124): 410e6b08 6355b028 63e3cc78 63e6cc88 6355b028
I/DEBUG ( 124): 410e6b18 00000000 0000002b 62fd9840 00000080
I/DEBUG ( 124): 410e6b28 62fd9838 00000000 00000000 00000000
I/DEBUG ( 124): 410e6b38 00000000 00000000 6f632f6b 00000033
I/DEBUG ( 124): 410e6b48 0000000d 00003f8a 6346ef8a 000000bc
I/DEBUG ( 124): 410e6b58 6346e000 00001046 00000003 00000008
I/DEBUG ( 124): 410e6b68 410e6a78 410e6ac0 63f82000 00000033
I/DEBUG ( 124): 410e6b78 7379732f 2f6d6574 6d617266 726f7765
I/DEBUG ( 124): 410e6b88 65742f6b 6870656c 2d796e6f 6d6d6f63
I/DEBUG ( 124): 410e6b98 6a2e6e6f 1f007261 001ba78e 0000002b
I/DEBUG ( 124): 410e6ba8 00000000 00000000 00000000 00000000
I/DEBUG ( 124): 410e6bb8 640640d4 00000009 6406410f 00000014
I/DEBUG ( 124):
I/DEBUG ( 124): memory near r7:
I/DEBUG ( 124): 65125894 825a0505 83840505 8cd70505 8cd80505
I/DEBUG ( 124): 651258a4 8cd90505 8cda0505 92360505 92370505
I/DEBUG ( 124): 651258b4 a07e0505 a07f0505 a84c0505 a84d0505
I/DEBUG ( 124): 651258c4 b0520505 a84e0505 b82e0505 bf2e0505
I/DEBUG ( 124): 651258d4 c5d70505 cb860505 cb870505 d0370505
I/DEBUG ( 124): 651258e4 de150505 825b0505 8cdb0505 8cdc0505
I/DEBUG ( 124): 651258f4 8cdd0505 92390505 923a0505 923b0505
I/DEBUG ( 124): 65125904 825c0505 825d0505 923d0505 a0890505
I/DEBUG ( 124): 65125914 b0570505 825f0505 83850505 83860505
I/DEBUG ( 124): 65125924 85610505 85620505 85630505 85640505
I/DEBUG ( 124): 65125934 85650505 85660505 85670505 85680505
I/DEBUG ( 124): 65125944 88750505 88760505 88770505 88780505
I/DEBUG ( 124): 65125954 88790505 887a0505 887b0505 887c0505
I/DEBUG ( 124): 65125964 887d0505 8cdf0505 8ce00505 8ce10505
I/DEBUG ( 124): 65125974 8ce20505 8ce30505 8ce40505 8ce50505
I/DEBUG ( 124): 65125984 d3e00505 d3e10505 d3e20505 d70a0505
I/DEBUG ( 124):
I/DEBUG ( 124): memory near r8:
I/DEBUG ( 124): bee626f4 400c0010 410e6ae8 6308cd40 61ca88d8
I/DEBUG ( 124): bee62704 63e004a9 63e004bf 63edc3f2 0000000c
I/DEBUG ( 124): bee62714 0035ef7b 00000001 00010081 00000001
I/DEBUG ( 124): bee62724 00000001 00000004 00000008 6308cd20
I/DEBUG ( 124): bee62734 6308cd20 6308cd40 00000000 00000000
I/DEBUG ( 124): bee62744 407ce400 00000006 410c4e00 00000000
I/DEBUG ( 124): bee62754 4081a7a3 6308cd20 00000000 00000000
I/DEBUG ( 124): bee62764 407ce400 00000006 6308cd20 6308cd40
I/DEBUG ( 124): bee62774 00000000 00000000 407ce400 00000006
I/DEBUG ( 124): bee62784 410c4e00 00000000 408145e9 400c0020
I/DEBUG ( 124): bee62794 410c4e30 400c0010 41c47760 407ce400
I/DEBUG ( 124): bee627a4 40816bc5 62cc7b92 407d76a4 00000000
I/DEBUG ( 124): bee627b4 400c0010 40859c98 61c31480 fffffe6c
I/DEBUG ( 124): bee627c4 bee627e4 bee628c0 00000000 00000000
I/DEBUG ( 124): bee627d4 407db580 00000000 41c2e008 0000003e
I/DEBUG ( 124): bee627e4 63a53e30 410c4ea0 61c2faa0 419e8000
I/DEBUG ( 124):
I/DEBUG ( 124): memory near r9:
I/DEBUG ( 124): 6308cd20 72646e61 2e64696f 2e63666e 6665644e
I/DEBUG ( 124): 6308cd30 7373654d 00656761 00000020 00000023
I/DEBUG ( 124): 6308cd40 646e614c 64696f72 63666e2f 65644e2f
I/DEBUG ( 124): 6308cd50 73654d66 65676173 0000003b 000011f1
I/DEBUG ( 124): 6308cd60 4068ac00 000011e9 00410300 00c10416
I/DEBUG ( 124): 6308cd70 02010318 04010419 00810316 02030417
I/DEBUG ( 124): 6308cd80 000000c8 0000002a 4068ac00 034203b9
I/DEBUG ( 124): 6308cd90 02010318 06010419 00810316 03010418
I/DEBUG ( 124): 6308cda0 00610415 02020601 00410315 00000029
I/DEBUG ( 124): 6308cdb0 40173c7c 40173c7c 00810342 01810417
I/DEBUG ( 124): 6308cdc0 00210414 00310514 00410315 02030417
I/DEBUG ( 124): 6308cdd0 00000118 0000002a 4068ac00 030803c5
I/DEBUG ( 124): 6308cde0 00610300 0801061a 00410315 00c10416
I/DEBUG ( 124): 6308cdf0 02010318 02030419 00810316 00000029
I/DEBUG ( 124): 6308ce00 40173c7c 40173c7c 00410315 01010417
I/DEBUG ( 124): 6308ce10 02010318 06010419 00810316 02020418
I/DEBUG ( 124):
I/DEBUG ( 124): memory near sp:
I/DEBUG ( 124): bee62698 4085e1b0 400c0010 63edc3e8 4080d6e5
I/DEBUG ( 124): bee626a8 63edc3e8 63edc3ed df0027ad 00000000
I/DEBUG ( 124): bee626b8 41d82360 4085e1b0 00000001 636b8b24
I/DEBUG ( 124): bee626c8 63f82000 4081a3ff bee62714 4081aebd
I/DEBUG ( 124): bee626d8 63bc34bd 41c75f60 00000012 00000000
I/DEBUG ( 124): bee626e8 635fc3cc 00000004 0035ef7b 400c0010
I/DEBUG ( 124): bee626f8 410e6ae8 6308cd40 61ca88d8 63e004a9
I/DEBUG ( 124): bee62708 63e004bf 63edc3f2 0000000c 0035ef7b
I/DEBUG ( 124): bee62718 00000001 00010081 00000001 00000001
I/DEBUG ( 124): bee62728 00000004 00000008 6308cd20 6308cd20
I/DEBUG ( 124): bee62738 6308cd40 00000000 00000000 407ce400
I/DEBUG ( 124): bee62748 00000006 410c4e00 00000000 4081a7a3
I/DEBUG ( 124): bee62758 6308cd20 00000000 00000000 407ce400
I/DEBUG ( 124): bee62768 00000006 6308cd20 6308cd40 00000000
I/DEBUG ( 124): bee62778 00000000 407ce400 00000006 410c4e00
I/DEBUG ( 124): bee62788 00000000 408145e9 400c0020 410c4e30
I/DEBUG ( 124):
I/DEBUG ( 124): code around pc:
I/DEBUG ( 124): 408069ac bf008ff0 0005337c 0003774c 0003ee48
I/DEBUG ( 124): 408069bc 000376ca 0003ede9 0003ede2 6ac26883
I/DEBUG ( 124): 408069cc 3021f853 e00018d3 f9934603 1c581000
I/DEBUG ( 124): 408069dc dbf92900 68c34770 1021f853 bfeef7ff
I/DEBUG ( 124): 408069ec 41f3e92d 68004606 f006460d 4604f9ff
I/DEBUG ( 124): 408069fc 6831b9c0 68076a88 8010f8d7 eb084638
I/DEBUG ( 124): 40806a0c 685903c5 ffdaf7ff 1035f838 46384606
I/DEBUG ( 124): 40806a1c ffe1f7ff 462a4905 44794633 46209000
I/DEBUG ( 124): 40806a2c fb3af007 e8bd4620 bf0081fc 0003ed57
I/DEBUG ( 124): 40806a3c 4ff0e92d b087460c f854461d 46073023
I/DEBUG ( 124): 40806a4c 68509910 4f40f013 f8d16813 90048000
I/DEBUG ( 124): 40806a5c 0014f04f fb00d105 9a043005 fbc2f7ff
I/DEBUG ( 124): 40806a6c fb00e06c 684af605 0c06eb03 f8539205
I/DEBUG ( 124): 40806a7c f8dcb006 b1966004 200cf8dc 429a68cb
I/DEBUG ( 124): 40806a8c 493bd006 95004638 f0074479 e014fb05
I/DEBUG ( 124): 40806a9c f8dc0092 68890008 efe4f7c6 f8dfb938
I/DEBUG ( 124):
I/DEBUG ( 124): code around lr:
I/DEBUG ( 124): 40819f0c bd384240 41f0e92d 6a864614 680a4605
I/DEBUG ( 124): 40819f1c 68364688 46306973 07c2eb03 f7ec6879
I/DEBUG ( 124): 40819f2c 8879fd4d 0714f104 61a16166 46386120
I/DEBUG ( 124): 40819f3c fb89f01a 2300492c 44794622 f8d861e0
I/DEBUG ( 124): 40819f4c 60250004 60606263 44784828 ffccf7ff
I/DEBUG ( 124): 40819f5c 6ce8b958 4926b928 447969a8 ed64f7b3
I/DEBUG ( 124): 40819f6c 6a2ab118 4100f042 f8d86229 b1833008
I/DEBUG ( 124): 40819f7c 18ca6af1 5acbd00d e002f8b2 c004f8b2
I/DEBUG ( 124): 40819f8c 81633210 e00ef8a4 c00cf8a4 e8bd6222
I/DEBUG ( 124): 40819f9c f10481f0 f01a0014 6861fbfc bf58070a
I/DEBUG ( 124): 40819fac 05cb3001 81e0b280 d51b8160 46384a11
I/DEBUG ( 124): 40819fbc 6812447a f01a62a2 7805fb46 b2ea3d42
I/DEBUG ( 124): 40819fcc 2a182504 f8dfd804 44fcc030 5002f91c
I/DEBUG ( 124): 40819fdc 072d4638 f96df00e bfb42800 4500f045
I/DEBUG ( 124): 40819fec 62654305 81f0e8bd 00025666 00032fde
I/DEBUG ( 124): 40819ffc 00032fd7 0003fb8c 0003b4c3 4ff0e92d
I/DEBUG ( 124):
I/DEBUG ( 124): memory map around fault addr e551c4ac:
I/DEBUG ( 124): bee42000-bee63000 [stack]
I/DEBUG ( 124): (no map for address)
I/DEBUG ( 124): ffff0000-ffff1000 [vectors]
I/ServiceManager( 120): service 'media.audio_flinger' died
I/ServiceManager( 120): service 'media.player' died
I/ServiceManager( 120): service 'media.camera' died

I'm definitely not an android expert (I use stock rom), but I'm a programmer (and use both o.s.: linux and windows) and I use command line widely.

Anyway, I'm trying to resurrect the Nexus 7 because I definitely think it's a software issue and not an hardware one (I didn't notice anything that made me think it was an hardware issue, no battery/screen flickering and a slowdown is usual on any android o.s. if it's busy doing a lot of things).

Seems like the only option to resurrect is factory image (deletes everything) or unlock bootloader => do something (still deletes everything). I think I had "backup and restore" set to backup everything on my google account so internal things should not be an issue, however everything on the SD is "lost", and this is boring. I had debug mode enabled because I tried developing some apps on it, so are there any way I can backup "SD" things before unlocking bootloader? I can run fastboot mode, as I've stated it's a software issue.

Because I want to prevent any future issues: what are the consequences of unlocking bootloader and keep it unlocked (considering that it can be re-locked for warranty reasons)?

My android version is 4.2.2 wireless only (no 3g module).