[Galaxy Tab 2 Q&A, Help & Troubleshooting] Ka-B00M:
I have TWRP 2.8.5.0. I tried to flash TWRP 3.0.2-0 from the existing recovery, and it failed. What am I doing wrong? I have included the log TWRP made for you to look at.

Starting TWRP 2.8.5.0 on Sun Oct 16 02:09:28 2016
(pid 84)
TW_NO_REBOOT_BOOTLOADER := true
RECOVERY_SDCARD_ON_DATA := true
I:CPU temperature file '/sys/class/thermal/thermal_zone0/temp' not found, disabling CPU temp.
TW_NO_USB_STORAGE := true
I:Found brightness file at '/sys/devices/omapdss/display0/backlight/panel/brightness'
I:TWFunc::Set_Brightness: Setting brightness control to 255
Starting the UI...Pixel format: 1280x800 @ 32bpp
Pixel format: BGRA_8888
Not using qualcomm overlay, 'omapfb'
framebuffer: fd 4 (1280 x 800)
=> Linking mtab
=> Processing recovery.fstab
I:Processing '/system'
I:Processing '/cache'
I:Processing '/data'
I:Setting up '/data' as data/media emulated storage.
I:mount '/data/media' '/sdcard' process ended with RC=0
I:mount '/data/media/0' '/sdcard' process ended with RC=0
I:Processing '/efs'
I:Created '/efs' folder.
I:Processing '/boot'
I:Processing '/recovery'
I:Processing '/bootloader'
I:Processing '/preload'
I:Created '/preload' folder.
I:Processing '/external_sd'
I:Created '/external_sd' folder.
I:Backup folder set to '/data/media/0/TWRP/BACKUPS/c160761366ed311'
I:Settings storage is '/data/media/0'
Updating partition details...
I:Data backup size is 2506MB, free: 6230MB.
I:Unable to mount '/external_sd'
I:Actual block device: '', current file system: 'vfat'
...done
I:Unmounting main partitions...

Partition Logs:
/system | /dev/block/mmcblk0p9 | Size: 1204MB Used: 956MB Free: 248MB Backup Size: 956MB
Flags: Can_Be_Mounted Can_Be_Wiped Can_Be_Backed_Up Wipe_Available_in_GUI IsPresent
Primary_Block_Device: /dev/block/mmcblk0p9
Display_Name: System
Storage_Name: System
Backup_Path: /system
Backup_Name: system
Backup_Display_Name: System
Storage_Path: /system
Current_File_System: ext4
Fstab_File_System: ext4
Backup_Method: files

/cache | /dev/block/mmcblk0p7 | Size: 688MB Used: 11MB Free: 677MB Backup Size: 11MB
Flags: Can_Be_Mounted Can_Be_Wiped Can_Be_Backed_Up Wipe_During_Factory_Reset Wipe_Available_in_GUI IsPresent
Primary_Block_Device: /dev/block/mmcblk0p7
Display_Name: Cache
Storage_Name: Cache
Backup_Path: /cache
Backup_Name: cache
Backup_Display_Name: Cache
Storage_Path: /cache
Current_File_System: ext4
Fstab_File_System: ext4
Backup_Method: files

/data | /dev/block/mmcblk0p10 | Size: 12149MB Used: 2506MB Free: 6230MB Backup Size: 2506MB
Flags: Can_Be_Mounted Can_Be_Wiped Can_Be_Backed_Up Wipe_During_Factory_Reset Wipe_Available_in_GUI IsPresent Has_Data_Media Can_Encrypt_Backup Use_Userdata_Encryption Is_Storage Is_Settings_Storage
Symlink_Path: /data/media/0
Symlink_Mount_Point: /sdcard
Primary_Block_Device: /dev/block/mmcblk0p10
Length: -16384
Display_Name: Data
Storage_Name: Internal Storage
Backup_Path: /data
Backup_Name: data
Backup_Display_Name: Data
Storage_Path: /data/media/0
Current_File_System: ext4
Fstab_File_System: ext4
Backup_Method: files
MTP_Storage_ID: 65537

/efs | /dev/block/mmcblk0p1 | Size: 19MB Used: 4MB Free: 15MB Backup Size: 4MB
Flags: Can_Be_Mounted Can_Be_Wiped Can_Be_Backed_Up IsPresent
Primary_Block_Device: /dev/block/mmcblk0p1
Display_Name: EFS
Storage_Name: EFS
Backup_Path: /efs
Backup_Name: efs
Backup_Display_Name: EFS
Storage_Path: /efs
Current_File_System: ext4
Fstab_File_System: ext4
Backup_Method: files

/boot | /dev/block/mmcblk0p5 | Size: 8MB
Flags: Can_Be_Backed_Up IsPresent Can_Flash_Img
Primary_Block_Device: /dev/block/mmcblk0p5
Display_Name: Boot
Storage_Name: boot
Backup_Path: /boot
Backup_Name: boot
Backup_Display_Name: Boot
Storage_Path: /boot
Current_File_System: emmc
Fstab_File_System: emmc
Backup_Method: dd

/recovery | /dev/block/mmcblk0p6 | Size: 8MB
Flags: IsPresent Can_Flash_Img
Primary_Block_Device: /dev/block/mmcblk0p6
Display_Name: Recovery
Storage_Name: recovery
Backup_Path: /recovery
Backup_Name: recovery
Backup_Display_Name: Recovery
Storage_Path: /recovery
Current_File_System: emmc
Fstab_File_System: emmc
Backup_Method: dd

/bootloader | /dev/block/mmcblk0p2 | Size: 2MB
Flags: IsPresent
Primary_Block_Device: /dev/block/mmcblk0p2
Display_Name: bootloader
Storage_Name: bootloader
Backup_Path: /bootloader
Backup_Name: bootloader
Backup_Display_Name: bootloader
Storage_Path: /bootloader
Current_File_System: emmc
Fstab_File_System: emmc
Backup_Method: dd

/preload | /dev/block/mmcblk0p11 | Size: 503MB Used: 269MB Free: 234MB Backup Size: 269MB
Flags: Can_Be_Mounted Can_Be_Wiped IsPresent
Primary_Block_Device: /dev/block/mmcblk0p11
Display_Name: preload
Storage_Name: preload
Backup_Path: /preload
Backup_Name: preload
Backup_Display_Name: preload
Storage_Path: /preload
Current_File_System: ext4
Fstab_File_System: ext4
Backup_Method: files

/external_sd | | Size: 0MB Used: 0MB Free: 0MB Backup Size: 0MB
Flags: Can_Be_Mounted Can_Be_Wiped Wipe_Available_in_GUI Removable Is_Storage
Primary_Block_Device: /dev/block/mmcblk1p1
Alternate_Block_Device: /dev/block/mmcblk1
Display_Name: Micro SDcard
Storage_Name: Micro SDcard
Backup_Path: /external_sd
Backup_Name: external_sd
Backup_Display_Name: Micro SDcard
Storage_Path: /external_sd
Current_File_System: vfat
Fstab_File_System: vfat
Backup_Method: files
MTP_Storage_ID: 65538

I:Loading package: TWRP (/script/ui.xml)
I:Load XML directly
I:Loading package: TWRP (/data/media/0/TWRP/theme/ui.zip)
I:Loading zip theme
I:Loading package: TWRP (/twres/ui.xml)
I:Load XML directly
I:Checking resolution...
I:Loading resources...
open_png /twres/images/button.png
open_png /twres/images/file.png
open_png /twres/images/folder.png
open_png /twres/images/indeterminate001.png
open_png /twres/images/indeterminate002.png
open_png /twres/images/indeterminate003.png
open_png /twres/images/indeterminate004.png
open_png /twres/images/indeterminate005.png
open_png /twres/images/indeterminate006.png
open_png /twres/images/indeterminate007.png
open_png /twres/images/progress_empty.png
open_png /twres/images/progress_fill.png
open_png /twres/images/checkbox_empty.png
open_png /twres/images/checkbox_checked.png
open_png /twres/images/radio_empty.png
open_png /twres/images/radio_selected.png
open_png /twres/images/medium-button.png
open_png /twres/images/mediumwide-button.png
open_png /twres/images/sort-button.png
open_png /twres/images/minus-button.png
open_png /twres/images/plus-button.png
open_png /twres/images/home-icon.png
open_png /twres/images/back-icon.png
open_png /twres/images/console-toggle.png
open_png /twres/images/slider.png
open_png /twres/images/slider-used.png
open_png /twres/images/slider-touch.png
open_png /twres/images/unlock.png
open_png /twres/images/keyboard1.png
open_png /twres/images/keyboard2.png
open_png /twres/images/keyboard3.png
open_png /twres/images/keyboard4.png
open_png /twres/images/cursor.png
I:Loading variables...
I:Loading mouse cursor...
I:Loading pages...
I:PageSet::CheckInclude loading filename: '/twres/landscape.xml'
I:Loading included resources...
I:Loading included variables...
I:Loading mouse cursor...
I:Loading included pages...
I:Loading page main
I:Loading page main2
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page install
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page flash_confirm
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page flash_zip
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page flash_done
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page install_image
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page flashimage_confirm
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page clear_vars
I:Loading page confirm_action
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page action_page
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page singleaction_page
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page action_complete
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page filecheck
I:Loading page rebootcheck
I:Loading page reboot
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page selectstorage
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page mount
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page usb_mount
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page usb_umount
I:Loading page wipe
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page advancedwipe
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page formatdata
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page formatdata_confirm
I:Loading page checkpartitionlist
I:Loading page partitionoptions
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page refreshfilesystem
I:Loading page selectfilesystem
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page backup
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page backupname1
I:Loading page backupname2
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page backupencryption
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page backupencryption2
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page checkbackuppassword
I:Loading page backup_run
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page restore
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Unable to open '/data/media/0/TWRP/BACKUPS/c160761366ed311'
I:Loading page restore_read
I:Loading page restore_decrypt
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page try_restore_decrypt
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page restore_select
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page renamebackup
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page restore_run
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page settings
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page timezone
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page screen
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page Vibrate
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page advanced
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page partsdcard
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page htcdumlock
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page lock
I:Loading page filemanagerlist
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page filemanageroptions
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page choosedestinationfolder
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page filemanagerrenamefile
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page filemanagerrenamefolder
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page filemanagerchmod
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page filemanagerconfirm
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page filemanageracction
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page decrypt
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page trydecrypt
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page terminalfolder
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page terminalcommand
I:Loading page sideload
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page fixperms
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Loading page installsu
I:Cannot find file /sys/class/thermal/thermal_zone0/temp
I:Set page: 'clear_vars'
I:Set page: 'main2'
I:Switching packages (TWRP)
No file contexts for SELinux
Full SELinux support is present.
E:Cannot load volume /misc!
E:Cannot load volume /misc!
Startup Commands:
ro.boot.emmc_checksum=3
ro.boot.debug_level=0x4f4c
ro.boot.carrier=wifi-only
ro.boot.mode=reboot_recovery
ro.boot.serialno=c160761366ed311
ro.serialno=c160761366ed311
ro.bootmode=reboot_recovery
ro.baseband=unknown
ro.bootloader=unknown
ro.hardware=espresso10
ro.revision=10
ro.emmc=0
ro.boot.emmc=0
ro.factorytest=0
ro.secure=0
ro.allow.mock.location=1
ro.debuggable=1
persist.sys.usb.config=mtp,adb
ro.build.id=JZO54K
ro.build.display.id=cm_p5110-eng 4.1.2 JZO54K f5a9f2c204 test-keys
ro.build.version.incremental=f5a9f2c204
ro.build.version.sdk=16
ro.build.version.codename=REL
ro.build.version.release=4.1.2
ro.build.date=Thu Feb 12 11:08:32 UTC 2015
ro.build.date.utc=0
ro.build.type=eng
ro.build.user=dees_troy
ro.build.host=ded1.ktechnology.net
ro.build.tags=test-keys
ro.product.model=GT-P5110
ro.product.brand=samsung
ro.product.name=espresso10wifixx
ro.product.device=espresso10wifi
ro.product.board=piranha
ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.manufacturer=samsung
ro.product.locale.language=en
ro.product.locale.region=US
ro.wifi.channels=
ro.board.platform=omap4
ro.build.product=espresso10wifi
ro.build.description=espresso10wifixx-user 4.0.3 IML74K P5110XWALD2 release-keys
ro.build.fingerprint=samsung/espresso10wifixx/espresso10wifi:4.0.3/IML74K/P5110XWALD2:user/release-keys
ro.build.characteristics=tablet
ro.cm.device=p5110
rild.libpath=/vendor/lib/libsec-ril.so
rild.libargs=-d /dev/ttys0
telephony.lteOnCdmaDevice=0
ro.sf.lcd_density=160
ro.rommanager.developerid=cyanogenmod
keyguard.no_require_sim=true
ro.url.legal=http://www.google.com/intl/%s/mobile/android/basic/phone-legal.html
ro.url.legal.android_privacy=http://www.google.com/intl/%s/mobile/android/basic/privacy.html
ro.com.google.clientidbase=android-google
ro.com.android.wifi-watchlist=GoogleGuest
ro.setupwizard.enterprise_mode=1
ro.com.android.dateformat=MM-dd-yyyy
ro.com.android.dataroaming=false
ro.cm.version=10-20150212-UNOFFICIAL-p5110
ro.modversion=10-20150212-UNOFFICIAL-p5110
ro.config.ringtone=CyanTone.ogg
ro.config.notification_sound=CyanMessage.ogg
ro.config.alarm_alert=CyanAlarm.ogg
ro.carrier=unknown
wifi.interface=wlan0
wifi.supplicant_scan_interval=15
ro.opengles.version=131072
dalvik.vm.heapstartsize=5m
dalvik.vm.heapgrowthlimit=48m
dalvik.vm.heapsize=256m
ro.kernel.android.checkjni=1
dalvik.vm.dexopt-flags=m=y
net.bt.name=Android
net.change=net.bt.name
dalvik.vm.stack-trace-file=/data/anr/traces.txt
init.svc.ueventd=running
init.svc.recovery=running
service.adb.root=1
init.svc.adbd=running
twrp.crash_counter=0
ro.twrp.boot=1
ro.twrp.version=2.8.5.0

I:Copying file /cache/recovery/log to /cache/recovery/last_log
tw_get_context got selinux context: unlabeled
I:Got default contexts and file mode for storage files.
I:Attempt to load settings from settings file...
I:Loading settings from '/data/media/0/TWRP/.twrps'.
I:Backup folder set to '/data/media/0/TWRP/BACKUPS/c160761366ed311'
I:Copying file /etc/recovery.fstab to /cache/recovery/recovery.fstab
I:Version number saved to '/cache/recovery/.version'
I:Unable to mount '/external_sd'
I:Actual block device: '', current file system: 'vfat'
I:TWFunc::Set_Brightness: Setting brightness control to 76
I:Switching packages (TWRP)
I:TWFunc::Set_Brightness: Setting brightness control to 5
I:TWFunc::Set_Brightness: Setting brightness control to 0
I:TWFunc::Set_Brightness: Setting brightness control to 76
I:Set page: 'install'
I:Set page: 'selectstorage'
I:Backup folder set to '/data/media/0/TWRP/BACKUPS/c160761366ed311'
I:Set page: 'clear_vars'
I:Set page: 'install'
I:Set page: 'flash_confirm'
I:Set page: 'flash_zip'
I:operation_start: 'Flashing'
Installing '/sdcard/Download/espresso-common_TWRP_3.0.2-6.zip'...
Checking for MD5 file...
Skipping MD5 check: no MD5 file found
Verifying zip signature...
I:read key e=3 hash=20
I:1 key(s) loaded from /res/keys
E:footer is wrong
E:Zip signature verification failed: 1
Error flashing zip '/sdcard/Download/espresso-common_TWRP_3.0.2-6.zip'
Updating partition details...
I:Data backup size is 2506MB, free: 6230MB.
I:Unable to mount '/external_sd'
I:Actual block device: '', current file system: 'vfat'
...done
I:Set page: 'flash_done'
I:operation_end - status=1
I:Set page: 'clear_vars'
I:Set page: 'main2'
I:Set page: 'advanced'
I:Set page: 'confirm_action'
I:Set page: 'action_page'
I:operation_start: 'Copy Log'
I:Copying file /tmp/recovery.log to /data/media/0/recovery.log