How to Root the Onyx Boox Tab Ultra C (Windows)

[jkaltes]

You are right, I managed to flash boota_patched.img with:

./edl w boot_a ./boota_patched.img

edl from https://github.com/bkerler/edl

[Renate]

Originally Posted by jkaltes

You are right, I managed to flash boota_patched.img with...

Or for Windows you can use my native version (in my sig).

[poweredren]

Originally Posted by Renate

Or for Windows you can use my native version (in my sig).

Originally Posted by jkaltes

You are right, I managed to flash boota_patched.img with:

./edl w boot_a ./boota_patched.img

edl from https://github.com/bkerler/edl

With the latest update of Onyx Boox Tab Ultra C, the fastloader are no longer able detected by PC Device Manager, I'm still here with Magisk patched boot image waiting to be flashed, and too dumbed to patched via edl just as
@jkaltes said, (Git and Python approach from bkerler), could you please help elaborate on how to do it via window *EDL or a rooted recovery and dd* or from the *or the native in your sig (doesn't shown anything)*

[Renate]

Click on my big name on the left. "Visit Renate's homepage!" Go to EDL.
Read the instructions, install WinUsb with Zadig. Use the loader that's linked.

C:\>edl /lwhatever
C:\>edl /u /r /pboot_a backupa
C:\>edl /u /r /pboot_b backupb
C:\>edl /u /w /pboot_a magisk12345
C:\>edl /u /w /pboot_b magisk12345
C:\>edl /z

[casainho]

Using my Linux Ubuntu PC, I could root my Onyx Boox Tab Ultra C Pro as expected. But yes, after latest firmware update, the fastboot didn't work anymore.

This were the steps I did:

- first read boot_a and boot_b, using latest edl from his github repo:

./edl r boot_a boot_a_original_ufs_lun_4.img
./edl r boot_b boot_b_original_ufs_lun_4.img

https://postimg.cc/nCrSFYBh

- after I applied magisk to that both files and finally write them back using edl:

./edl w boot_a boot_a_magisk_patched.img
./edl w boot_b boot_b_magisk_patched.img

https://postimg.cc/75V5K7tS

And for the linux guys here, I were able to install latest Linux Ubuntu 24.04 (xubuntu version) on my Onyx Boox Tab Ultra C Pro!!
That was possible using Termux, and now I can run things like VS Code to read some code and build it :-)

Thanks to being able to root the Onyx Boox Tab Ultra C Pro, I were able to install the Linux Ubuntu 24.04 using chroot, that gives the best performance possible!!

Here some pictures I took:

https://postimg.cc/Lht2kSb1

https://postimg.cc/VdzrnDDz

So I used Android when I have there apps that I prefer, and then I also use Linux Ubuntu, just like the same I use on my laptop - Like I prefer to use PC Firefox version instead of Android Firefox, like I can switch faster between sites/tabs on PC Firefox version and not on Android version.
And by the way, the touch inside Linux works great!! So, this is a great Eink Linux tablet!!

I am using this cheap Bluetooth keyboard I bought on Aliexpress and that works great both on Android and Linux, as the Fx keys works like to change audio volume, change the brightness, go to home, etc.

[Renate]

Just out of interest, what is the HWID on your Tab Ultra C Pro, please?

[makarenkoav70]

1. Read the instructions from the pdf file and do everything.
2. After everything is done from the instructions, we put in the ADB folder: 1.bin, 662.elf, a, B.
3. Launch the adb console, and enter cd c:\adb and then alternate commands.
adb reboot edl
edl.exe /l1.bin - inserting the driver
edl.exe /l662.elf
edl.exe /z
edl /u /w /boot_a a
edl /u /w /boot_b b
4. We rejoice

I might have forgotten something, so let's try it together.
Thanks Cheater and Renate.

Download files https://4pda.to/forum/index.php?show...st&p=134171096

[Renate]

Mmm, mostly there, except:
You only do one file once for /l
/z is the command for reboot so it comes last.

[saleh]

After the rooting process it is impossible to get OTA updates, right? Well, is there a way to undo root process and get updates again?

[Renate]

Originally Posted by saleh

After the rooting process it is impossible to get OTA updates, right? Well, is there a way to undo root process and get updates again?

With a standard Magisk root you've only modified the boot image. A full update will go in painlessly. An incremental update will fail on pre SHA check. It's best to save your old boot image partition before rooting so that you can restore it and do incremental updates.