yashsingh1/xdaforums huggingface dataset:
[Xperia Arc Android Development] robhazes:
Frequent hard-reboots, help...

Thanks to the developers for this fantastic Rom. It performs great on my sk17 Mango.

But after having used it for some days I start getting random hard reboots and I am unable to find out what is causing them.

I tried re-flashing both kernel and Rom but that does not help.

Underneath the section of LAST_KMSG where some errors are listed (in Bold text). Can someone help me finding out what is causing this problem? I really would like to stick to CM13 and not jump back to CM11.

[ 199.840484] mmc1: ADM mode: busy=1, chnl=8, crci=13

[ 199.840576] mmc1: xfer_size=4096, data_xfered=0, xfer_remain=4096

[ 199.840728] mmc1: got_dataend=0, prog_enable=0, wait_for_auto_prog_done=0, got_auto_prog_done=0, req_tout_ms=10000

[ 199.840820] mmc1: PM: sdcc_suspended=0, pending_resume=0, sdcc_suspending=0

[ 199.841003] mmc1: RPM: runtime_status=0, usage_count=1, is_suspended=0, disable_depth=0, runtime_error=0, request_pending=0, request=0

[ 199.841217] mmc1: DMA channel flushed (0x80000004)

[ 199.841369] Flush data: 0000c003 4f260000 00000000 00400040 00400040 00000003

[ 199.841613] mmcblk0: error -110 transferring data, sector 8194992, nr 8, cmd response 0x900, card status 0xb00

[ 199.841979] mmc1: msmsdcc_hw_reset disable regulator: failed: -22

[ 199.842132] ------------[ cut here ]------------

[ 199.842224] Kernel BUG at c0481408 [verbose debug info unavailable]

[ 199.842376] Internal error: Oops - BUG: 0 [#1] PREEMPT ARM

[ 199.842468] Modules linked in: wl12xx_sdio(O) wl12xx(O) mac80211(O) cfg80211(O) compat(O)

[ 199.843109] CPU: 0 Tainted: G O (3.4.0-LX+ #1)

[ 199.843200] PC is at msmsdcc_hw_reset+0x8c/0xbc

[ 199.843353] LR is at msmsdcc_hw_reset+0x8c/0xbc

[ 199.843444] pc : [<c0481408>] lr : [<c0481408>] psr: 600b0113

[ 199.843444] sp : dd999e80 ip : 00000010 fp : dd97c800

[ 199.843688] r10: dd1df5e8 r9 : dd1df288 r8 : 00000001

[ 199.843841] r7 : ffffffea r6 : dd851440 r5 : 00000001 r4 : dd851000

[ 199.843933] r3 : c09012cc r2 : c09012cc r1 : 00000000 r0 : 0000004b

[ 199.844085] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel

[ 199.844177] Control: 10c57c7d Table: 418d4059 DAC: 00000015

Problem fixed. It was caused by app-data restored with Titanium backup from CM11 to CM13 for one of my apps. Did a clean install, and configured the specific app manually.
[Xperia Arc Android Development] gouster3:
I have added busybox to kernel, missing busybox was issue that my update.zip cannot successfully mount system partition.

Here is boot.img with busybox: http://s000.tinyupload.com/index.php?file_id=34384873753802183671

Xperia Neo(Hallon/MT15i) Only!!!!!!!!!!!!!
[Xperia Arc Android Development] Mardon:
Busybox is deprecated and replaced by toybox. Better update your zip instead of reverting back to busybox.

Gesendet von meinem LT18i mit Tapatalk
[Xperia Arc Android Development] gouster3:
Thanx. does it have same command names and syntax,so i should just replace "busybox" to "toybox"?
[Xperia Arc Android Development] umaturman:
5%/24 = 0,21% per hour. 100%/ 5% = 20 (twenty) days of standby on a single charge! Hello Gingerbread? I'm not convinced :cowboy:

My observations tell me other - it's 0.8% per hour (wi-fi is in sleep mode, 2g, data is turned off).
[Xperia Arc Android Development] nussbaum:
Try

sudo modprobe f2fs

before mounting
[Xperia Arc Android Development] Mardon:
If you use busybox mount you can use toybox mount now. See cm13 update script or my gapps update scrip inside the zip

Gesendet von meinem LT18i mit Tapatalk
[Xperia Arc Android Development] XDynamite:
I'm trying this rom on my Ray but mobile data doesn't work, it doesn't connect at all. I have tried airplane mode off/on, 2G/3G but nothing. However with my Lexar class 10 card the phone is really slow, it takes several seconds just to open settings page... I have to buy a faster card I think.
[Xperia Arc Android Development] TomTomcrafter001:
Yeah it takes some time for me, too. Maybe just buy a new phone.
[Xperia Arc Android Development] gouster3:
So i have two options.

1. edit updater-script (replace busybox to toybox commands)

or

2. make symlink named busybox to toybox in ramdisk

Am i right?
[Xperia Arc Android Development] pastsomeone:
great work!

yair speaking
[Xperia Arc Android Development] dragongreen:
Try this:

1- Put your phone in 2G mode.

2- Enable mobile data (don't switch off).

3- Now put your phone in airplane mode "On".

4- Turn off the airplane mode and see if it works.
[Xperia Arc Android Development] hertell:
Hi [MENTION=3683123]nussbaum[/MENTION]. That did not work..

root@htpc:~/src/f2fs-tools# modprobe f2fs
FATAL: Module f2fs not found.
root@htpc:~#

I suspect that the source i complied did not contain everything. After doing a make install, only the following is available

root@htpc:~/src/f2fs-tools# find /usr/local/ -name '*f2fs*'
/usr/local/lib/libf2fs_format.so.0.0.0
/usr/local/lib/libf2fs.la
/usr/local/lib/libf2fs_format.so
/usr/local/lib/libf2fs.so
/usr/local/lib/libf2fs_format.so.0
/usr/local/lib/libf2fs.so.0.0.0
/usr/local/lib/libf2fs.so.0
/usr/local/lib/libf2fs_format.la
/usr/local/lib/libf2fs_format.a
/usr/local/lib/libf2fs.a
/usr/local/share/man/man8/mkfs.f2fs.8
/usr/local/sbin/mkfs.f2fs
/usr/local/sbin/defrag.f2fs
/usr/local/sbin/fibmap.f2fs
/usr/local/sbin/fsck.f2fs
/usr/local/sbin/parse.f2fs
/usr/local/sbin/dump.f2fs
/usr/local/sbin/f2fstat

ldconfig did also not help (/etc/ld.so.conf.d/libc.conf contains: /usr/local/lib) :(

---------- Post added at 08:36 PM ---------- Previous post was at 08:27 PM ----------

It just hit me that isn't Marshmallow using selinux? Then just plain tar does not save all attributes. For that we should also use the --selinux parameter in tar.

Now that we're at selinux, i'll have a question to [MENTION=3839575]mikeioannina[/MENTION]: I'm not 100% sure if the f2fs-filesystem supports selinux. If it does not, then should'nt the external SD-card be formatted as ext4 instead of f2fs?
[Xperia Arc Android Development] SirBiggle:
Good question. Perhaps the Problem that WLAN stops to work after a few days ist related to that?

I will try my phone with ext4 to see if it makes a difference for the wireless.
[Xperia Arc Android Development] hertell:
I'm just in the middle of moving everything from a basic class10 sd-card to a uhs-1 speedy 90x sdcard. What i read about f2fs, it's faster than ext4.. Now if f2fs fails with selinux, then it looks to me that i need to reinstall everything on a fresh ext4 partition, because restoring the selinux-attributes from nothinw wont work :(
[Xperia Arc Android Development] SirBiggle:
don't hurry. 8-)

every time i moved the sd-card the phone worked fine. i did that several times since i am experimenting and

needed to install a backup.

so, this time i'll do it again but i will put an ext4 on the sdcard.

i will Report if it makes a difference i will recognize. 8-)
[Xperia Arc Android Development] intruder16:
[MENTION=2180618]hertell[/MENTION],

Good point. I'm not on my Linux machine right now. Can you do a quick "ls -Z" or "ls -lZ" in your main sd card to see the any selinux context?

If there are any we should use the --selinux parameter with tar as you suggested.

I cloned 3 SD cards using the method i posted and they worked pretty well. I'm using one of them (EVO+ 32GB) right now.

EDIT:

Just wanted to share a quick tip:

Use tar as root/superuser while backing up or restoring

.
[Xperia Arc Android Development] hertell:
ls -lZ on the main card gives me this:

drwx------ 2 root root ? 4096 Mar 9 10:34 adb
drwxrwxr-x 2 1000 1000 ? 4096 Mar 13 15:42 anr
drwxrwx--x 59 1000 1000 ? 8192 Mar 13 08:34 app
drwx------ 2 root root ? 4096 Mar 9 10:34 app-asec
drwxrwx--x 2 1000 1000 ? 4096 Mar 9 10:34 app-lib
drwxrwx--x 2 1000 1000 ? 4096 Mar 9 10:34 app-private
drwx------ 5 1000 1000 ? 4096 Mar 13 15:41 backup
drwxr-xr-x 2 2000 2000 ? 4096 Mar 9 10:34 bootchart
lrwxrwxrwx 1 root root ? 45 Mar 9 10:34 bugreports -> /data/data/com.android.shell/files/bugreports
drwxrwx--x 4 root root ? 4096 Mar 9 10:35 dalvik-cache
drwxrwx--x 149 1000 1000 ? 20480 Mar 12 07:14 data
drwxrwx--- 2 1019 1019 ? 4096 Mar 9 10:34 drm
drwxr-x--x 3 root root ? 4096 Mar 9 10:34 local
drwxrwx--- 2 root root ? 4096 Mar 9 10:34 lost+found
drwxrwx--- 4 1023 1023 ? 4096 Jan 6 1980 media
drwxrwx--- 2 1031 1031 ? 4096 Mar 9 10:34 mediadrm
drwxrwx--t 22 1000 9998 ? 4096 Jan 6 1980 misc
drwx------ 2 root root ? 4096 Mar 13 15:42 property
drwxrwxr-x 3 1001 1001 ? 4096 Mar 13 15:39 radio
drwxrwx--x 2 1000 1000 ? 4096 Mar 9 10:34 resource-cache
drwx--x--x 2 1000 1000 ? 4096 Mar 9 10:34 security
drwx------ 2 1000 1000 ? 4096 Mar 9 10:34 ss
drwxr-x--- 3 root 2000 ? 4096 Mar 9 10:34 ssh
drwxrwxr-x 19 1000 1000 ? 4096 Mar 13 22:02 system
drwxrwx--x 2 1000 1000 ? 4096 Mar 10 08:01 tombstones
drwx--x--x 2 1000 1000 ? 4096 Mar 9 10:34 user

So no selinux in this listing.. :(
[Xperia Arc Android Development] SirBiggle:
I am on ext4 for the sd-card now. the phone started normally and everything seems to be fine.

like after every sd-card transition wireless is working fine. i will see how long. usually it starts to

have problems after 1 or two days.
[Xperia Arc Android Development] mikeioannina:
f2fs should support selinux since we use a backported version. It doesn't matter anyway since we have set selinux to permissive, because we don't have the device-specific rules written. It's in my todo list for about 2 years, but it might not be possible to enforce with some of the hacks we are using (non-PIE, text relocations, etc)
[Xperia Arc Android Development] sudheerkdty:
I was trying to flash Walkman. No errors. But no Apps installed

I was trying to install walkman V6M by lacoste from link

walkman-z3-lacoste .

The flash got completed without any errors. But no files were installed .

This was the same when i tried Installing Xperia Z5 premium walkman port

xperia-z5-premium-walkman port

CAn some one tell me why is this so?

I got it working when i manually moved files to /system/. But this metod dont allow updating music app over play store. Everything was fine on LX CM12.1

---------- Post added at 12:06 PM ---------- Previous post was at 11:16 AM ----------

For me free memory available is alomst 60-70MB.

I have installed Gapps and Xperia Keyboard
[Xperia Arc Android Development] Superrman:
here just updated bug list (that happen to me)

1.wifi dosnt connect automatically

2.data dosnt work (almost every boot need move from 3G to 2G and back) to work

3&4.PC mode connect to MTP work after press the 2nd time, also after sometime the device stuck (while transfer files mostly big) or long time)

also theres some crash and lags but i guess its not a bug, is my main device so i use it alot

PS viper4android works great not only on music almost like xloud
[Xperia Arc Android Development] hertell:
Hi,

Ok, this makes sense :) Then i'll reformat my card, and go for f2fs.

Btw. Is there a reason why the rom does not use the whole sd-card to 100%? My slower card had a 1,5Mb unused block in the end of the card.. Is there a particular reason for this?
[Xperia Arc Android Development] SirBiggle:
The Problem with wifi has reappeared. so finally it seems not to be a difference if you have ext4 or f2fs.

i will revert to f2fs with the next requirement to install a backup.
[Xperia Arc Android Development] TomTomcrafter001:
i think we dont need se-Linux because it would hurt Performance. with 1 GHz single core and 512 mb ram we dont even have enough processing power to boot the device under one Minute. Its just my opinion on this. ;)
[Xperia Arc Android Development] shiritaro:
It happened to me, but changing APN Protocol and APN Roaming Protocol to "IPv4" from "IPv4/IPv6" in APN settings page fixed the issue. Maybe it's just for me.
[Xperia Arc Android Development] niks255:
The mobile data bug is very strange. Logcat shows that when you switch network, it just switches the preference. RIL doesn't change state. It's probably a librill bug.
[Xperia Arc Android Development] filjusz:
Monday: start of the test at 8 PM, charged phone to 100%, 2G, Wi-Fi off, Data off, volume off, 7 days standby test, i check how much battery gone past week (14.03.2016 - 21.03.2016)

I will post here results (screenshoots)
[Xperia Arc Android Development] smyer79:
After 1 week of using, I am feeling some "lags" on my xperia mini pro, feels like the phone needs some seconds to open apps and react, like flipping the keyboard.

Anyone else is facing this too?
[Xperia Arc Android Development] badcoder:
WHAT ARE YOU TALKING ABOUT I CANT BELIEVE THIS.....:eek::eek::eek::eek::eek::eek::eek:
[Xperia Arc Android Development] filjusz:
Oh, sorry for my English Sir.
[Xperia Arc Android Development] Yasser Stark:
Hello guys after searching and trying to fix my sdcard i finally did nothing

So im running Ubuntu on virtual-box is there any way i can fix the bad blocks on the sdcard or any way i can isolate them ??
[Xperia Arc Android Development] JOVICAMPEK:
Do you have any important files on that sd card? If not I wouldn't bother, every sd card that died on me was unrecoverable. SD cards are pretty cheap these days, and that's exactly the route I took when mine sd died.
[Xperia Arc Android Development] TomTomcrafter001:
I wonder what happens when the internal storage dies someday. Or is it "un-die-able"?
[Xperia Arc Android Development] badcoder:
Cm13 installation problem

I followed LX wiki marshmallow installation guide ,

- Followed each step perfectly upto " Wipe SD card"

- But problem started in "" Flash the images using sideload "":crying::crying:

- Yes I followed,

- reboot again to recovery (Note: the "reboot recovery" option does not work. Do a normal reboot and press the recovery key instead)

- connect USB to PC

- Select Apply update > Apply from ADB

- Thats it.... My phone simply showing just two options like this > Apply from ADB

> cancel ABD

- I am stucked here....:confused: Dunno whats next.

- Actually I cant understand this step - 4. Sideload LX13 rom (takes 10 minutes). Example:

adb sideload cm-13.0-20160224-UNOFFICIAL-LegacyXperia-urushi.zip

Please help.
[Xperia Arc Android Development] Pixelado:
It just "dies". You might experience weird stuff when the memory is on it's way out (ie. random bootloops caused by corrupted /system or /data parts, a bunch of order samsung phones suffer from this).

Sometimes the controller detects excesive wear and locks itself to read-only to prevent data loss. Some chips are not so smart and run until the underlying cells wear out to the point of unusability.

Most of the time they just fail unexpectedly and unrecoverably :P

---------- Post added at 05:01 PM ---------- Previous post was at 04:56 PM ----------

Look up "adb sideload" on google. Basically, you need to have ADB version 1.0.32 and a command prompt (assuming you're on windows)

1. Boot into recovery

2. prepare your phone to receive and flash an update from ADB sideload

3. Connect your phone to your PC

4. On your computer use the "adb sideload *file*.zip" command to sideload CM13 and any other supported package such as gapps.

NOTE: don't quote the OP
[Xperia Arc Android Development] litemintx:
Goodcoder, you can also refer in this video installation

https://youtu.be/bnmscTHVxLo
[Xperia Arc Android Development] dragongreen:
Coolcoder, you must have the ADB drivers installed on your computer first.
[Xperia Arc Android Development] DeadXperiance:
I have Smultron with corrupted data partition so I running on CM 12.1 with 2 gb Ext4 partition on sd card for data.

It is running normally.
[Xperia Arc Android Development] SirBiggle:
if the two Options

- Thats it.... My phone simply showing just two options like this > Apply from ADB

> cancel ABD

Shows on your phone just enter

adb sideload cm-13.0-20160224-UNOFFICIAL-LegacyXperia-urushi.zip

in a dos box where you have adb on your pc.

it flashes the Image to the phone. will Need 5-10 minutes and you will see a Progress in the dos box and you will see something Happening on the phone
[Xperia Arc Android Development] badcoder:
already i watched it , what's in that.... No answer is there for my question........:D
[Xperia Arc Android Development] Kaito_kid:
Step 4. Install from side load that mean.. in windows xplore. Whre you saved your cm13.zip.. press shift then right click there --> chose open command bla bla bla here.. --> it will open cmd.. then write adb sideload cm13 bla bla bla. Zip..

Then press enter

---------- Post added at 04:17 PM ---------- Previous post was at 04:10 PM ----------

Here the pict fot step 4
[Xperia Arc Android Development] Ritonz:
I am not being able to install the drivers for Viper4android on my mango. The app asks for busybox, which i've installed even though I know this rom already uses toybox. I've also granted storage permissions to the app, but the problem persists. Please help.
[Xperia Arc Android Development] erop88:
als

somebody please tell how to disable auto light sensor on this FXP CM13? and on all CM after CM9 i think... i try to search on xda and in google and in this thread and didn`t find anything... because on 75 % of brightness illumination work how on 30 % of brightness with als off on other firmware stock\CM9 and eat battery more then on 30 % als off i think... through settings not to disable any way... search on faq etc of FXP also nothing about it... my device is mini pro, and in mini\lww etc i think it will be so bad... and als off is much more brightly... help please =\

i also tryed editing hw_config.sh on previous CM roms and nothing at me has turned out... Disable Auto Brightness Xperia app also not working
[Xperia Arc Android Development] Kaito_kid:
What do you mean with auto light sensor?? It a srceen bright sensor?? Or what other?
[Xperia Arc Android Development] erop88:
google.com/?gws_rd=ssl#newwindow=1&q=xperia+disable+als
[Xperia Arc Android Development] rap0307:
tried to flash sound mod and it did has progress flashing and was successful but after booting non of the mod appear or got flashed any help
[Xperia Arc Android Development] erop88:
yes It a srceen bright sensor
[Xperia Arc Android Development] Kaito_kid:
Owh.. lol.. that the same way with cm12 or cm12.1 or cm13.

I can't give you scren shot.. but it set in setting,.. sorry I m use cm 11 now.

But if you want to wait.. for 1 hour, I will back to flash cm13.. hahaha
[Xperia Arc Android Development] erop88:
i don`t know what about you talk, but that about i told isn't present in any settings, the fact that it changes it there not what I speak about...
[Xperia Arc Android Development] TomTomcrafter001:
Did you read "S7 edge bootloader exception bug"? I know its off-topic but hey :p . If not, search it on xda
[Xperia Arc Android Development] Kaito_kid:
Did you mean this control...
[Xperia Arc Android Development] erop88:
yes but it not off als even on official 4.0, only with Disable Auto Brightness Xperia app or editing hw_config.sh etc

google what is the auto light sensor

hide pic to spoiler

---------- Post added at 09:50 AM ---------- Previous post was at 09:10 AM ----------

anyone know how to do like this on cm13?

http://xdaforums.com/showthread.php?t=1445546
[Xperia Arc Android Development] Pixelado:
That's one I had not heard of haha.

I'm looking into buying a 32GB Samsung EVO+ as an upgrade to my old 16GB Sandisk Class4 card. Wondering if it's worth it for a little extra performance out of CM13.
[Xperia Arc Android Development] badcoder:
thank you guys
[Xperia Arc Android Development] coffystop:
Hello all,on cm 13 audio call, clients: viber,signal,skype don't identify phone microphon.Its normal?
[Xperia Arc Android Development] rap0307:
I was able to flash signed zips in cm recovery however non of the files flashed got installed any help
[Xperia Arc Android Development] Rhlraj32:
Thanks shiritaro for the Solution
[Xperia Arc Android Development] litemintx:
You can flash tru adb or with otg.
[Xperia Arc Android Development] :
Bootloop

Dear mikeioannina,

Thank you for this amazing work. I enjoyed using it. I was not experiencing any problem using it until last night. My phone was having a continuous bootloop and not being able to go into recovery mode. I used sdcard UHS-1 class 10 32GB on my Sony Ericsson Live with Walkman (WT19i). Can you suggest me the best thing to do? I like this ROM so much and I hope that I don't have to downgrade to CM12.
[Xperia Arc Android Development] rap0307:
Yeah tried thru cm and adb flashing is ok but non of the files from zip got installed when in cm12 was ok
[Xperia Arc Android Development] Superrman:
Viper4android work great for me almost like the real xloud for all apps and phone GUI

at CM11 it worked only with the music player

the only "downside "if my phone got out of RAM the app terminated ...

(like most apps)

now im trying to move all ext4 i hope swapfile will work there
[Xperia Arc Android Development] plb-dev:
Disable boot animation

Guys, this is slightly off topic, but i wanted to know if it works. Can i disable the boot animation to display the linux kernel-startup process (like shown in the attatchment)? By any method?
[Xperia Arc Android Development] M1chiel:
Chainfire made LiveBoot, but I am not sure if it works with cm, it needs SuperSU, not just root. Check http://www.xda-developers.com/chainfire-turns-your-bootanimation-into-a-logging-center/

Please let us know if you managed to get it working!
[Xperia Arc Android Development] :
Mine too. It happened last night. But I didn't do anything like changing SIM card. Now it stuck on bootloop...[emoji24]
[Xperia Arc Android Development] plb-dev:
Will do ! But, does flashing supersu cause conflicts with the built in root system ? Maybe bootloops ?
[Xperia Arc Android Development] filjusz:
No, I flashed SuperSU and everything works great ;)
[Xperia Arc Android Development] erop88:
somebody please tell how to disable auto light sensor on this FXP CM13? and on all CM after CM9 i think... i try to search on xda and in google and in this thread and didn`t find anything... because on 75 % of brightness illumination work how on 30 % of brightness with als off on other firmware stock\CM9 and eat battery more then on 30 % als off i think... through settings not to disable any way... search on faq etc of FXP also nothing about it... my device is mini pro, and in mini\lww etc i think it will be so bad... and als off is much more brightly... help please =\

i also tryed editing hw_config.sh on previous CM roms and nothing at me has turned out... Disable Auto Brightness Xperia app also not working

on this way there are no necessary lines for editing http://xdaforums.com/showthread.php?t=1445546
[Xperia Arc Android Development] Superrman:
Finally after 3 hours i mange to expend my RAM

result are:

CPU: 1024MHZ > 1400MHZ

INT MEM: 500MB > 1500MB (part of main partition ext4)

RAM: 512MB > 1512MB (1 GB of 2nd partition ext4)

Xposed working (somehow even after hard rest it still was installed)

Xloud working

illumination light working for everything (orange light for coconut)

only dimmable camera led dosnt work :(

to save SD life i only turn on VRAM while i need it

abit slower loading but less lag and app crushing so worth it
[Xperia Arc Android Development] :
Could you explain step by step?
[Xperia Arc Android Development] Kaito_kid:
Haha. . .

It passed now...

I think it depent to sd card..

Or because we trun off the phone hardly..

Trun off phone without pressing pwer off but with remove batere...

Sorry bad english...

[emoji4] [emoji2]
[Xperia Arc Android Development] plb-dev:
It works now ! Thanks ;)
[Xperia Arc Android Development] badcoder:
Doubt in sd card tunning guide and speed

smultron - cm13

- using class 10 SanDisk Ultra microSDHC 16GB 48MB/S UHS-I Card

- installation over, booting process over

- beginning guide starts, i clicked next, the phone turns very slow for 1min.

- after it came to normal and finished guide successfully

- And the phone is too smooth and fast with fresh installation + MDPI_miniGAPPS-6.0-20160311-tb-signed.zip.

- so my sd card speed test result shown below.

- is this speed enough for cm13.

- LX wiki sd card tuning guide is difficult to understand, please somebody make a video tutorial or easy guide...........