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Detailed Guide of Getting a Stock ICS Infinity unlocked

Hi Guys,
i decided to open this thread, because in my opinion my questions aren't really answered yet. So here is my question:
I have a Stock Infinity with 9.4.5.21 ICS Firmware and i want to get my NVFlash Files and finally install a Custom JB ROM on it.
But i don't really know in which order i have to follow the already postet guides. I think i have to do it as follows:
1. Unlock Bootloader with official ASUS APK
2. Gain Root (f.e. with the one-klick-root-tool)
3. Proceed with Nvflash (to make it Brick-Safe, because it seems that it happens very often)
4. Install Stock JB Firmware from Asus (But how to flash it?)
5. Flash Custom Recovery (f.e. TWRP with GooManager)
6. Flash Custom ROM (f.e. Clean Rom)
7. Be happy to have a non-bricked TF700
Can someone plz help me to verify these steps? I'm sure it will also help others who aren't certain about unlocking, too.

I would do this:
1. Unlock with the official tool and void your warranty, hope that Asus' servers work.
2. Root is not required at all for using fastboot or a custom recovery.
3. Do the NVFlash backups using fastboot and nvflash. Copy the created files from the tablet to your PC before you flash anything else.
4. Install a custom recovery using fastboot.
5. Flash the Asus JB firmware to get the JB bootloader. AFAIK this can be done from the custom recovery.
6. Restore custom recovery using fastboot, it was overwritten by the Asus JB firmware.
7. Flash custom ROM. If you use CleanROM, it's already rooted.

DieAbrissbirne said:
Hi Guys,
i decided to open this thread, because in my opinion my questions aren't really answered yet. So here is my question:
I have a Stock Infinity with 9.4.5.21 ICS Firmware and i want to get my NVFlash Files and finally install a Custom JB ROM on it.
But i don't really know in which order i have to follow the already postet guides. I think i have to do it as follows:
1. Unlock Bootloader with official ASUS APK
2. Gain Root (f.e. with the one-klick-root-tool)
3. Proceed with Nvflash (to make it Brick-Safe, because it seems that it happens very often)
4. Install Stock JB Firmware from Asus (But how to flash it?)
5. Flash Custom Recovery (f.e. TWRP with GooManager)
6. Flash Custom ROM (f.e. Clean Rom)
7. Be happy to have a non-bricked TF700
Can someone plz help me to verify these steps? I'm sure it will also help others who aren't certain about unlocking, too.
Click to expand...
Click to collapse
I see issue with your process. After step 4 (install Stock JB firmware from Asus site), after this you no longer have root/recovery, so you can't proceed to step 5 using GooManager. You should follow _that's recommendation, however at step 5, instead of flash the JB firmware, you just use fastboot to flash JB bootloader only, then you don't need his step 6. Go straight to step 7 (use custom recovery to flash custom rom).

Thanks for your help!
So now I think it should work like this:
1. Unlock Bootloader with official ASUS APK
2. Proceed with Nvflash (Afterwards boot into Stock Android to save NvFlash Files before continuing)
3. Install TWRP Recovery
4. Install JB Bootloader with ADB
5. Flash Custom ROM (f.e. Clean Rom)
6. Be Happy, because now it's unbrickable and ervery Custom Rom can be flashed
But i dont't know what I have to type into ADB to flash JB-Bootloader and where to get the Bootloader-Only-File?

DieAbrissbirne said:
Thanks for your help!
So now I think it should work like this:
1. Unlock Bootloader with official ASUS APK
2. Proceed with Nvflash (Afterwards boot into Stock Android to save NvFlash Files before continuing)
3. Install TWRP Recovery
4. Install JB Bootloader with ADB
5. Flash Custom ROM (f.e. Clean Rom)
6. Be Happy, because now it's unbrickable and ervery Custom Rom can be flashed
But i dont't know what I have to type into ADB to flash JB-Bootloader and where to get the Bootloader-Only-File?
Click to expand...
Click to collapse
PM me I give you JB bootloader zip file
No ADB, just use TWRP to flash JB bootloader just like you flash a rom.

I finally made it without bricking it
If anyone else have questions, feel free to ask me!
And thank you guys for your help

[Q] HElP , Tablet soft Brick

hi
first sorry for my bad english
My tablet was on 4.0.3 Offical Version , I unlocked it and succesfully root it
Today i Flashed cm-10.1-20130105-NIGHTLY-tf300t with wrong CWM !
For now , i can go to recovery and USB Flash .
But i dont have any rom in my sd card except cm-10.1-20130105-NIGHTLY-tf300t
I Use Cwm back up my "offical 4.0.3" rom before install CM10.1 but now when i restore that it doesnt work and My Tablet hang on ASUS Logo
What can i do ?!

To switch from ICS 4.0.x to JB 4.1.x or 4.2.x (which is CM10.1) you need to first flash the actual official rom from ASUS, flash a new bootloader, i recommend TWRP at this point, via Fastboot.
To flash the official rom you need to unzip it once and then flash the new zip.
Then flash a new bootloader for JB via fastboot.
Now flashing CM 10.1 should work fine.
When I'm in this situation i use my external sdcard to get new roms to my transformer.
If you don't have a micro SD or aren't able to get to it without the transformer you should use ADB Sideload.
Therefore:
-update your android sdk (Tools and Plattform Tools)
-flash TWRP with fastboot: http://teamw.in/project/twrp2/97
-install a new rom with ADB Sideload: http://teamw.in/ADBSideload

markusg90 said:
To switch from ICS 4.0.x to JB 4.1.x or 4.2.x (which is CM10.1) you need to first flash the actual official rom from ASUS, flash a new bootloader, i recommend TWRP at this point, via Fastboot.
To flash the official rom you need to unzip it once and then flash the new zip.
Then flash a new bootloader for JB via fastboot.
Now flashing CM 10.1 should work fine.
When I'm in this situation i use my external sdcard to get new roms to my transformer.
If you don't have a micro SD or aren't able to get to it without the transformer you should use ADB Sideload.
Therefore:
-update your android sdk (Tools and Plattform Tools)
-flash TWRP with fastboot: http://teamw.in/project/twrp2/97
-install a new rom with ADB Sideload: http://teamw.in/ADBSideload
Click to expand...
Click to collapse
After flashing twrp 2.3.3
I flashed Stock Rom [ Rooted ] From this topic via twrp 2.3.3 [ this topic : http://forum.xda-developers.com/showthread.php?t=1893714&highlight=stock
And after that I flashed boot.blob via fastboot
But now my tablet hangs again on ASUS logo !
I have access to recovery and fastboot mod
what can i do now ?!
is there any way too boot tablet ?

After flashing cm9 my problem solved !
But plz can some one tell me how i can flash JB roms on my tablet ?
i dont know how i can flash jb bootloader , plz help me

flash a stock ICS via fastboot and take the OTA update from Asus, should work afaik, but will overwrite all your datas except SD card, including Reovery

-angel* said:
flash a stock ICS via fastboot and take the OTA update from Asus, should work afaik, but will overwrite all your datas except SD card, including Reovery
Click to expand...
Click to collapse
After unlocking bootloader OTA Update will not work and there is no way to "lock" bootloader !

Come on... What you are asking for is in the first sicky post on this section... Here is the link.

Update to 4.2.2 from 4.1.2

Hi folks! It has been a while since I have been on this forum; and I have a question about how to update from 4.1.2. to 4.2.2.
The process is not quite clear to me. Can I just download the Asus Firmware and flash through existing TWRP recovery (4.1.2 version)? Do I have to flash a kernel and new recovery using fastboot first? I see some step-by-step guides but also a view warnings. It is a littlebit vague to me what to do.Can anyone guide me through the process please?
I am on Hydro 7 but looking to update preferably to another custom 4.2.2. base rom. Tips are welcome

Best way is to download the firmware from asus website extract it (theres a zip inside the zip) and flash it with twrp, this will get rid of twrp so after the first boot find the approprate version of twrp and reflash it with fastboot, from there you can flash custom roms/ kernels at will
goodluck

I'm not sure if twrp will work. My upgrade path was to use fastboot the official zip from the Asus website, then fastboot twrp. Be careful which version of twrp you fastboot because it will cause a brick. I think twrp-2.5-4.2 should work for the US version for the official blob from the Asus website. For the WW version of the blob I used twrp version 2.4-4.2 successfully. Good luck!
Sent from my SAMSUNG-SGH-T989 using Tapatalk 2

JoinTheRealms said:
Best way is to download the firmware from asus website extract it (theres a zip inside the zip) and flash it with twrp, this will get rid of twrp so after the first boot find the approprate version of twrp and reflash it with fastboot, from there you can flash custom roms/ kernels at will
goodluck
Click to expand...
Click to collapse
Doen't work, will try the method above

extract the blob from the firmware zip.
usw via cmd: fastboot flash system blob
thats all

Hi
I'm also still running 4.1.1 on my TF300TG (WW-version).
The bootloader is unlocked with the asus-tool, cwm-recovery (CWM-based recovery v6.0.1.3) flashed with fastboot and the system is rooted with supersu.
Now i want to update to 4.2.1 but it won't work. neither with the SOP for manual update nor from cwm-recovery.
From what i found it should work like this:
- download the 4.2.1 (10.6.2.6) rom file from the asus website
- extract the zip (once)
- open the second zip and open \META-INF\com\google\android\updater-script
- delete everything except "assert(package_extract_file("blob", "/tmp/blob"), write_raw_image("/tmp/blob", "staging"),delete("/tmp/blob"));
set_progress(1.000000);"
- save file and save the zip
- put zip on sdcard and install from cwm-recovery
can someone tell me, if this is correct? or if i should only flash the blob with fastboot?
any help is appreciated!
thx!

Unable to get OTA Updates installed on TWRP - Need to go back to stock recovery

Hi All,
Background:
Installed TWRP recovery to downgrade to KitKat from Android ver 5.0.2 / COS 12.0 YNg1TAS17L
( I guess the changes in lollipop made me to do so).
But after installing TWRP, for some reason or other I did nothing and now the issue is the OTA are not getting installed. From other similar thread I know that we can download the OTA zip and install through TWRP and I am not looking to get into that...as I am giving this device to my family.
Help Required:
1) Is there a way to uninstall TWRP and go back to stock recovery without losing any data?
( Is it as simple as flashing recovery image from the Stock ROM?)
2) Using the OnePlus tool kit can we flash the stock ROM which will also restore the stock recovery?
(If so is it possible to flash the latest ROM 5.1.1 or CM12.1)
I just need guidance here with steps on what will be the best and safe approach without frying up my device.
Please suggest

droidfry said:
Hi All,
Background:
Installed TWRP recovery to downgrade to KitKat from Android ver 5.0.2 / COS 12.0 YNg1TAS17L
( I guess the changes in lollipop made me to do so).
But after installing TWRP, for some reason or other I did nothing and now the issue is the OTA are not getting installed. From other similar thread I know that we can download the OTA zip and install through TWRP and I am not looking to get into that...as I am giving this device to my family.
Help Required:
1) Is there a way to uninstall TWRP and go back to stock recovery without losing any data?
( Is it as simple as flashing recovery image from the Stock ROM?)
2) Using the OnePlus tool kit can we flash the stock ROM which will also restore the stock recovery?
(If so is it possible to flash the latest ROM 5.1.1 or CM12.1)
I just need guidance here with steps on what will be the best and safe approach without frying up my device.
Please suggest
Click to expand...
Click to collapse
Numerous other threads on the same subject... I don't understand why you are not ready to flash the OTA through TWRP but you are through stock recovery... It's the same thing... Don't use toolkit, they are the ones, in 99% of the cases, that "fry" your phone... As soon as TWRP is installed no OTA will automatically, you will have to flash them manually.

How to flash stock ROM in XT1040?

Hi, I've read many guides on how to flash stock roms and stuff, but I'm still not sure how to do it in my case.
I bought an XT1040 from a guy and it came with bootloader unlocked and Lollipop 5.0.2 (CM 12-20150126-NIGHTLY-peregrine)
I wanted to install the stock LP rom, but then I found an optimized version on this thread: http://forum.xda-developers.com/moto-g/4g-development/rom-stock-motorola-4g-lollipop-rom-t3142816 I think that would be better, but the problem is I'm following this guide to install a stock rom: http://forum.xda-developers.com/showthread.php?t=2542219 but it says you have to flash every file, one by one, yet this .zip I downloaded (Retail Latin America 5.1 ROM (Optimized) v1.0a (331mb)) only has a "boot.img" and some folders named "supersu", "system" and "META-INF". Does that mean I have to flash the whole ZIP in the recovery? (oh and btw I installed TWRP v2.8.7 [recoverytwrp2-8-7encryption.img] using adb, I didn't wipe the other recovery with "fastboot erase recovery" because this had CWM already installed... is that okay?)
What should I do?
In short:
I have a bootloader unlocked phone with Lollipop 5.0.2 (CM 12-20150126-NIGHTLY-peregrine) and CWM
I flashed TWRP v2.8.7 without wiping recovery (at least I think that's what "fastboot erase recovery" does)
I want to flash a stock rom (optimized) with LP 5.1 from here http://forum.xda-developers.com/moto-g/4g-development/rom-stock-motorola-4g-lollipop-rom-t3142816 (Retail Latin America 5.1 ROM (Optimized) v1.0a (331mb)) but I'm not sure what to do.
Thanks.
_______________________________________
I just decided to do what the guide said:
1) Boot into latest TWRP and Format Data (Wipe > Format DATA > Yes) - This step is essential, and will wipe Internal Storage (Downloads, Music, Photos etc, **backup important files**)
2) Transfer ROM to SDCARD or Internal Storage. This may be done in Windows via MTP, or using adb sideload or adb push ROM.zip /sdcard/
3) TWRP > Wipe > Factory reset and flash ROM.
4) Reboot.
5) Call / WiFi issues can be solved by flashing 5.1 Radio Firmware (Below) for your Model.
now I'm in the step 3, trying to flash the ROM but the bar doesn't fill at all...
_________________________________________
Lol that was me panicking, the device managed to flash the ROM and it's working now, I also flashed the radio firmware so I have working WiFi, but the screen flickering keeps happening each time I reboot the device.
I'll probably want to downgrade in the future... any tip on that would be appreciated.

You don't need to use Fastboot other than when changing TWRP version. Simply flash the Optimized Stock ROM (or any custom ROM) via TWRP. Screen flickering is caused by not having updated your Bootloader - this utility will do that for you: Bootloader Upgrader Tool.
I highly recommend you try the following optimized Stock Marshmallow ROM: (It's faster than Lollipop)
[ROM][PEREGRINE][6.0][STOCK] Identity Crisis 6 LTE v1.3b​