Develop Bugs

[Q] reflashing w/ fastboot w/out loosing /sdcard

if I issue following command (reflash factory image)
Code:
fastboot -w update image-mysid-jdq39.zip
would I loose content of my /sdcard ? I can't take out SD card as Galaxy Nexus doesn't have one, but I dont want to loose my data either

Backup
a1exus said:
if I issue following command (reflash factory image)
Code:
fastboot -w update image-mysid-jdq39.zip
would I loose content of my /sdcard ? I can't take out SD card as Galaxy Nexus doesn't have one, but I dont want to loose my data either
Click to expand...
Click to collapse
I am unsure if you will lose the data, but backup, backup, backup. I seem to think I had that issue a long while back, but I really don't remember. I always proceed with the assumption that something will go wrong because things do go wrong and you will want to be prepared for that. Here is how I backup my system before every flash or update, It takes a little time, but the first time you "need" it, you wont lose a thing(it has saved my bacon several times):
Things you will Need:
Titanium Backup
TWRP or CWM recovery
ADB - scroll to attached files and download the ADB package.
1. Open Titanium backup, tap the batch icon in the top right, and run all user apps + system data backup
2. Once Titanium is complete, reboot into your favorite recovery and perform a nand backup
3. Once that is complete, I do a full SDCARD backup to my computer through ADB using
Code:
adb pull /sdcard/ /destination/
/sdcard/ being the source and /destination/ being where your backup is stored.
You are now ready to do whatever you like without fear of losing data!
You can restore your sdcard with:
Code:
adb push /source/ /sdcard/
/source/ being the folder where you stored your /sdcard/ contents in the first command!

a1exus said:
if I issue following command (reflash factory image)
Code:
fastboot -w update image-mysid-jdq39.zip
would I loose content of my /sdcard ? I can't take out SD card as Galaxy Nexus doesn't have one, but I dont want to loose my data either
Click to expand...
Click to collapse
(assuming that your bootloader is already unlocked)
(-w) in fastboot command will erase your data
any way flash it this way: unzip the image.zip and flash each .img except userdata.img and you will be fine with your sdcard.
see http://forum.xda-developers.com/showthread.php?t=1626895

when you type adb then enter
all command will show up :good:

ranalab said:
when you type adb then enter
all command will show up :good:
Click to expand...
Click to collapse
adb is not the same as fastboot.....

Zepius said:
adb is not the same as fastboot.....
Click to expand...
Click to collapse
But...but... it's a command prompt. Those only do one thing.

Zepius said:
adb is not the same as fastboot.....
Click to expand...
Click to collapse
oops! i wanted to say fastboot command for -w

[Q] Flash Recovery .IMG without PC

My usb is corroded and I cannot connect to a computer to get into fastboot. I'm trying to be as careful as I can so that I don't brick my phone, but I need to update my CWM Recovery. If anyone has suggestions, or guidance, any help would be much appreciated. Thank you!
I have searched for this and haven't seen anything related to AT&T SGIII's. I have tried using Flash Image GUI, but it is only for Sprint.
Model SGH-I747M
Android 4.04
Kyan Rom 1.5
----------------------------------------***EDIT***------------------------------------------
EDIT for those searching the same question:
The best answer to my questions was provided by BCSC, THANKS! Worked great!
Follow these steps exactly and you will have the latest Recovery running. You do not need a PC for this method.
1) Download correct Clockworkmod ot TWRP (touch or regular as you wish) for your device
2) Rename it to recovery.IMG and place it at the root of your internal sdcard
3) Download and install terminal emulator from the Play Store
4) Run the terminal and
type: su (press enter)
Then type: dd if=/sdcard/recovery.img of=/dev/block/mmcblk0p18 (press enter)
Be sure that you have typed the above code correctly. You will not see a confirmation. It is done almost instantly.
5) Reboot into recovery and enjoy

I don't remember the commands, had to do it about 3 years ago, but you can do it from terminal emulator. A Google search should give the results you need.
I don't use cwm prefer twrp which can be done from the goomanger app I believe it can be done from rom manager though.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Just use rom manager I find its easy as pie, just make sure you install the proper recovery
https://play.google.com/store/apps/details?id=com.koushikdutta.rommanager
Sent from my GT-N8010 using xda app-developers app

mkfryan said:
I don't remember the commands, had to do it about 3 years ago, but you can do it from terminal emulator. A Google search should give the results you need.
I don't use cwm prefer twrp which can be done from the goomanger app I believe it can be done from rom manager though.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
I considered TWRP, but was scared to change out of fear something would go wrong... I think I will probably go that route. thanks!
EDIT: Tried to use Goo.mgr to install TWRP. It downloaded and went through the process, but recovery still loads CWM.
Found this on TWPR's website:
Paul Ireland • 11 months ago
So, I had a question. I couldn't really find any guides on how to install this if you already have CWM. I tried using goomanager to install and it would go through and say everything had completed, but when I'd reboot into recovery, I'd still have CWM.
My response, was to .tar the recovery image and install via ODIN.
Everything seems to have installed OK, I successfully flashed a ROM with it, but are there any drawbacks (other than the flash counter) to this method?

ckavvouras said:
Just use rom manager I find its easy as pie, just make sure you install the proper recovery
Sent from my GT-N8010 using xda app-developers app
Click to expand...
Click to collapse
Thank you, I have a CWM recovery installed.. I'm trying to update it, but cannot select D2att from the Recovery Setup. It only shows d2mtr for SGIII... I downloaded the correct file D2att.img from CWM.com, but do not know how to manually install the .img file without using fastboot.

bweyadn said:
Thank you, I have a CWM recovery installed.. I'm trying to update it, but cannot select D2att from the Recovery Setup. It only shows d2mtr for SGIII... I downloaded the correct file D2att.img from CWM.com, but do not know how to manually install the .img file without using fastboot.
Click to expand...
Click to collapse
Follow these steps exactly and you will have the latest Recovery running.
1) Download correct Clockworkmod ot TWRP (touch or regular as you wish) for your device
2) Rename it to recovery.IMG and place it at the root of your internal sdcard
3) Download and install terminal emulator from the Play Store
4) Run the terminal and
type: su (press enter)
Then type: dd if=/sdcard/recovery.img of=/dev/block/mmcblk0p18 (press enter)
Be sure that you have typed the above code correctly. You will not see a confirmation. It is done almost instantly.
5) Reboot into recovery and enjoy

@BCSC
Good find out know how! Glad someone at least knew what I was talking about :beer:
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

You can also flash it in Mobile Odin.

Press the menu button on the device selection screen, scroll down and pick your model.
Sent from my GT-N8010 using xda app-developers app

Not able to flash Recovery
bweyadn said:
My usb is corroded and I cannot connect to a computer to get into fastboot. I'm trying to be as careful as I can so that I don't brick my phone, but I need to update my CWM Recovery. If anyone has suggestions, or guidance, any help would be much appreciated. Thank you!
I have searched for this and haven't seen anything related to AT&T SGIII's. I have tried using Flash Image GUI, but it is only for Sprint.
Model SGH-I747M
Android 4.04
Kyan Rom 1.5
----------------------------------------***EDIT***------------------------------------------
EDIT for those searching the same question:
The best answer to my questions was provided by BCSC, THANKS! Worked great!
Follow these steps exactly and you will have the latest Recovery running. You do not need a PC for this method.
1) Download correct Clockworkmod ot TWRP (touch or regular as you wish) for your device
2) Rename it to recovery.IMG and place it at the root of your internal sdcard
3) Download and install terminal emulator from the Play Store
4) Run the terminal and
type: su (press enter)
Then type: dd if=/sdcard/recovery.img of=/dev/block/mmcblk0p18 (press enter)
Be sure that you have typed the above code correctly. You will not see a confirmation. It is done almost instantly.
5) Reboot into recovery and enjoy
Click to expand...
Click to collapse
.
Hey.. I'm trying really hard to flash a custom recovery on my A116 but believe me... This above method isn't working..
And even I tried SP Flash tools method.. Even dat is not working...

Doesn't works!!!
It does not works I followed all the steps..

SuryanshMishra2002 said:
It does not works I followed all the steps..
Click to expand...
Click to collapse
Does your USB port work? If it does, you can flash TWRP via Odin.

My odin doesn't flashes it.
I did all the steps that we should do to flash a recovery but when it completes my device stucks at the boot logo and then again i have to flash my stock recovery to get it back running.

Which recovery are you flashing? This is TWRP for the d2lte: https://dl.twrp.me/d2att/
Download the latest tar version of TWRP, open Odin, uncheck everything except f.reset time, flash, when you see reset" in the status window, remove USB cable, remove battery, replace battery, boot directly into recovery mode.

Not working
Thanks for the suggestion but i did all the same steps but not working i download TWRP officially but when I flash it with odin it stucks at the boot and then I have to flash the stock recovery to get it back running.

Just to confirm but the phone being flashed is an i747?

Why not buy a new usb cable?

Will this method of the Android Emulator will work for every other Android Phone or just for Samsung ?

filip_pine said:
Will this method of the Android Emulator will work for every other Android Phone or just for Samsung ?
Click to expand...
Click to collapse
The shell command referenced in the OP dd if=/sdcard/recovery.img of=/dev/block/mmcblk0p18 is highly device specific. You would need to make sure you use the right command for your device, as you are specifying the recovery partition with /dev/block/mmcblk0p18. Having said that, newer devices which use the A/B partition scheme don't have a recovery partition, so this entire thread is not applicable.

post-mortem said:
The shell command referenced in the OP dd if=/sdcard/recovery.img of=/dev/block/mmcblk0p18 is highly device specific. You would need to make sure you use the right command for your device, as you are specifying the recovery partition with /dev/block/mmcblk0p18. Having said that, newer devices which use the A/B partition scheme don't have a recovery partition, so this entire thread is not applicable.
Click to expand...
Click to collapse
Thank you, i understand now... i was going to try this on Huawei Mate 20 X. Thank you for the details. Cheers

[Q] "fastboot boot boot.img" without pc

Is there any wau i can perform the function that
Code:
fastboot boot boot.img
does without involving a pc on the go.
I managed to dual boot a Nokia X between stock and AOSP rom but I always have to use fastboot to get into the AOSP rom or i have to use TWRP to switch between kernels.

SilverDragon24 said:
Is there any wau i can perform the function that
Code:
fastboot boot boot.img
does without involving a pc on the go.
I managed to dual boot a Nokia X between stock and AOSP rom but I always have to use fastboot to get into the AOSP rom or i have to use TWRP to switch between kernels.
Click to expand...
Click to collapse
No! it requires pc, and you can advance restore boot with any recovery

sufoalmighty said:
No! it requires pc, and you can advance restore boot with any recovery
Click to expand...
Click to collapse
Actually, it does not!
You need to go for something like this:
Code:
su
dd if=/sdcard/boot.img of=/dev/block/mmcblk#p#
That is if you placed boot.img on sdcard partition and you know whis mmcblk contains boot partition (you need to put numbers instead of # in terminal). I highly recommend further googling for you about dd command and mmcblks on android. You will find everything out if you want to.

wnerw said:
Actually, it does not!
You need to go for something like this:
Code:
su
dd if=/sdcard/boot.img of=/dev/block/mmcblk#p#
That is if you placed boot.img on sdcard partition and you know whis mmcblk contains boot partition (you need to put numbers instead of # in terminal). I highly recommend further googling for you about dd command and mmcblks on android. You will find everything out if you want to.
Click to expand...
Click to collapse
I'm familiar with dd.... i need to boot temporarily like dual booting kernels.... dd would permanently flash the new kernel.
Sent from my Nexus 4 using XDA Free mobile app

[V500] How to install TWRP under stock LP?

I recently flashed the korean LP build on my V500. Since its terribly slow I wanted to move to CM. I read that TWRP is required to flash it and hence tried installing TWRP using both the TWRP Manager APP and flashify but neither of them seems to work as they are meant to work only over KK bootlaoader. Is there a ways to install TWRP over LP bootloader?

You need to install kitkat bootloader first and then install twrp (root is required):
1) Download kitkat bootloader: https://www.androidfilehost.com/?fid=24352994023707804
2) Extract the 6 bootloader img files and copy them to the internal sdcard.
3) Install Terminal Emulator and open it.
4) Run the following commands (grant root access to Terminal Emulator after the first command):
Code:
su
dd if=/sdcard/aboot.img of=/dev/block/platform/msm_sdcc.1/by-name/aboot
dd if=/sdcard/rpm.img of=/dev/block/platform/msm_sdcc.1/by-name/rpm
dd if=/sdcard/sbl1.img of=/dev/block/platform/msm_sdcc.1/by-name/sbl1
dd if=/sdcard/sbl2.img of=/dev/block/platform/msm_sdcc.1/by-name/sbl2
dd if=/sdcard/sbl3.img of=/dev/block/platform/msm_sdcc.1/by-name/sbl3
dd if=/sdcard/tz.img of=/dev/block/platform/msm_sdcc.1/by-name/tz
5) Download latest official TWRP, rename it to twrp.img and copy it to the internal sdcard.
6) Open Terminal Emulator and run the following commands (needs root again):
Code:
su
dd if=/sdcard/twrp.img of=/dev/block/platform/msm_sdcc.1/by-name/recovery
7) You are done! Reboot to recovery and flash any rom you want.

fefifofum said:
You need to install kitkat bootloader first and then install twrp (root is required):
1) Download kitkat bootloader: https://www.androidfilehost.com/?fid=23991606952613675
2) Extract the 6 bootloader img files and copy them to the internal sdcard.
3) Install Terminal Emulator and open it.
4) Run the following commands (grant root access to Terminal Emulator after the first command):
Code:
su
dd if=/sdcard/aboot.img of=/dev/block/platform/msm_sdcc.1/by-name/aboot
dd if=/sdcard/rpm.img of=/dev/block/platform/msm_sdcc.1/by-name/rpm
dd if=/sdcard/sbl1.img of=/dev/block/platform/msm_sdcc.1/by-name/sbl1
dd if=/sdcard/sbl2.img of=/dev/block/platform/msm_sdcc.1/by-name/sbl2
dd if=/sdcard/sbl3.img of=/dev/block/platform/msm_sdcc.1/by-name/sbl3
dd if=/sdcard/tz.img of=/dev/block/platform/msm_sdcc.1/by-name/tz
5) Download latest official TWRP, rename it to twrp.img and copy it to the internal sdcard.
6) Open Terminal Emulator and run the following commands (needs root again):
Code:
su
dd if=/sdcard/twrp.img of=/dev/block/platform/msm_sdcc.1/by-name/recovery
7) You are done! Reboot to recovery and flash any rom you want.
Click to expand...
Click to collapse
Wohooo it woked! Finished flashing you unofficial CM build. Thanks and keep rocking!

Hpw do you root stock lp v500?
Sent from my LG-V500 using Tapatalk

that's exactly what i was thinking. what did you do ravi?

Same question here... On. Stock lollipop Korean version but assume I need to be rooted to try the steps detailed above?

If you don't have access to a custom recovery, I guess you could root using this method (I didn't test it), you will also need LG drivers.

ravi_buz said:
wohooo it woked! Finished flashing you unofficial cm build. Thanks and keep rocking!
Click to expand...
Click to collapse
worked for me too. Thanks.
---------- Post added at 08:55 AM ---------- Previous post was at 08:49 AM ----------
Dri94 said:
Hpw do you root stock lp v500?
Sent from my LG-V500 using Tapatalk
Click to expand...
Click to collapse
Root using the iroot method http://forum.xda-developers.com/lg-g-pad-83/general/vk810-downgrade-required-t3116336

fefifofum said:
You need to install kitkat bootloader first and then install twrp (root is required):
1) Download kitkat bootloader: https://www.androidfilehost.com/?fid=23991606952613675
2) Extract the 6 bootloader img files and copy them to the internal sdcard.
3) Install Terminal Emulator and open it.
4) Run the following commands (grant root access to Terminal Emulator after the first command):
Code:
su
dd if=/sdcard/aboot.img of=/dev/block/platform/msm_sdcc.1/by-name/aboot
dd if=/sdcard/rpm.img of=/dev/block/platform/msm_sdcc.1/by-name/rpm
dd if=/sdcard/sbl1.img of=/dev/block/platform/msm_sdcc.1/by-name/sbl1
dd if=/sdcard/sbl2.img of=/dev/block/platform/msm_sdcc.1/by-name/sbl2
dd if=/sdcard/sbl3.img of=/dev/block/platform/msm_sdcc.1/by-name/sbl3
dd if=/sdcard/tz.img of=/dev/block/platform/msm_sdcc.1/by-name/tz
5) Download latest official TWRP, rename it to twrp.img and copy it to the internal sdcard.
6) Open Terminal Emulator and run the following commands (needs root again):
Code:
su
dd if=/sdcard/twrp.img of=/dev/block/platform/msm_sdcc.1/by-name/recovery
7) You are done! Reboot to recovery and flash any rom you want.
Click to expand...
Click to collapse
thank you for the guide I could boot into recovery but after I rebooted normally (i didn't do anything in TWRP) I got a boot error cause: boot certification verify. will installing cm12.1 solve the problem despite that flashing roms won't flash boot partition? or I should go to download mode and install stock rom? i still can boot to TWRP but not the rom

Where exactly shall I copy the img files to?
Have tried to copy them to the following places:
/
/sdcard/
/data/media/
/data/media/0
Also tried to use sd-card in command instead of sdcard, but I always get the same error; No such file or directory
Any suggestions?

Finally got it to work.
For some unknown reason Terminal Emulator would not accept the location for the files when I placed them under /sdcard/
Moved the *.img files to /storage/emulated/0, and used this location in the commandos instead of /sdcard/

Sorry for kind of off topic but I recently had the same reboot experience on the VK810.4G. It normally works and works again now. It works now too and was doing lots of unrelated things to my tablet so no idea what caused or fixed the issue.

Secure Booting Error
fefifofum said:
You need to install kitkat bootloader first and then install twrp (root is required):
...
7) You are done! Reboot to recovery and flash any rom you want.
Click to expand...
Click to collapse
Hi
thanks for the details,but after flashing TWRP I cannot boot into the system anymore:
"Secure booting Error!"
Cause : boot certification verify"
I can still boot into TWRP,but there seems to be something wrong with the Kitkat-Boolader...
Is there a another way to install TWRP from 5.02 or do I have to go back to Stock 4.2 with the LG-Tool ?
cheers
Donald

DonaldXP said:
Hi
thanks for the details,but after flashing TWRP I cannot boot into the system anymore:
"Secure booting Error!"
Cause : boot certification verify"
I can still boot into TWRP,but there seems to be something wrong with the Kitkat-Boolader...
Is there a another way to install TWRP from 5.02 or do I have to go back to Stock 4.2 with the LG-Tool ?
cheers
Donald
Click to expand...
Click to collapse
Hello there, look what i did .. Lollipop bootloader
Just do what u want to do in TWRP and then flash this LP bootloader files through Terminal in TWRP > u can boot again into stock LP.

Upu said:
Hello there, look what i did .. Lollipop bootloader
Just do what u want to do in TWRP and then flash this LP bootloader files through Terminal in TWRP > u can boot again into stock LP.
Click to expand...
Click to collapse
Thanks! I will try that.
cheers Donald

DonaldXP said:
Thanks! I will try that.
cheers Donald
Click to expand...
Click to collapse
You can put these files onto microSDcard and use the same commands just like flashing KitKat bootloader.

DonaldXP said:
Hi
thanks for the details,but after flashing TWRP I cannot boot into the system anymore:
"Secure booting Error!"
Cause : boot certification verify"
I can still boot into TWRP,but there seems to be something wrong with the Kitkat-Boolader...
Is there a another way to install TWRP from 5.02 or do I have to go back to Stock 4.2 with the LG-Tool ?
cheers
Donald
Click to expand...
Click to collapse
I have the same error, but i am not able to boot into TWRP or system.
i cant even go to stock recovery. it just displayes
"Secure booting Error!"
Cause : boot certification verify"
any way to get around this?

Upu said:
Hello there, look what i did .. Lollipop bootloader
Just do what u want to do in TWRP and then flash this LP bootloader files through Terminal in TWRP > u can boot again into stock LP.
Click to expand...
Click to collapse
Hey! Thanks for the tip! Just to clarify: when you flash the LP bootloader do you lose access to TWRP?
In the Stock installs of LP (HK or Korean) I've tried the LP bootloader appears to be "locked" (can't think of the right term) so that you can't access stock recovery from key strokes. Can you still keystroke boot into TWRP?
Many thanks!

Deleted, never mind.

My tab don't want to restart ... black screen
Hello,
I just try ... I have an error message duing the process ... I ty to restart the tab and ... the tab don't want to restart ..
Could someone help me?
I try to by pressing for a long time the power button but nothing.
Thanks in advance

Question Fastboot ROM

Hey everyone,
I'd like to flash some custom roms but I also want to make sure I can go back to stock OOS. I have a MacBook and I can't use the MSMDownloadTool to go back to the stock rom.
My question is, are there some EU based OOS fastboot roms flying around the internet?
Thank you in advance

xCopyright said:
Hey everyone,
I'd like to flash some custom roms but I also want to make sure I can go back to stock OOS. I have a MacBook and I can't use the MSMDownloadTool to go back to the stock rom.
My question is, are there some EU based OOS fastboot roms flying around the internet?
Thank you in advance
Click to expand...
Click to collapse
After you unlock the bootloader, before root or flash any roms or recoveries, temp boot TWRP via fastboot and take a backup of everything but your internal storage. Take note of which slot you were on when you took the backup, maybe put the active slot in the name of the backup. Save the backup to a USB drive or your computer's hard drive. If/when you restore, make sure you switch back to the slot the phone was on when you took the backup.

Here's something else you can do.
Temp boot TWRP and run the following commands in adb shell or in TWRP's terminal emulator. Do this before you root or make any other changes to the phone.
su
cd /dev/block/by-name
dd if=boot_a of=/sdcard/boot_a.img
dd if=boot_b of=/sdcard/boot_b.img
Now you have both boot partitions backed up. Next you can root either by flashing Magisk in TWRP or by patching whichever boot image came from the active slot, then flashing it with fastboot. Once you have root, install Partitions Backup & Restore from the play store and back up the rest of your partitions. Check everything but boot_a boot_b and userdata and run the backup. Move your boot_a and boot_b images to the Partitions Backup & Restore folder and put it on your computer or a USB drive. Once this is done you'll have stock backups of all your partitions, that can be flashed through fastboot or through adb shell or terminal in TWRP with the dd command.

Personally, I do both. I backup the boot partitions with the dd command, take a full backup in TWRP recovery, install magisk, then backup all the other partitions before I make any other changes to the device.