[Request] Tab MiniC Firmware Download

[kiDBk]

Originally Posted by Renate

I dunno, just make a full, raw backup with EDL then flash the TMC 3.5.4

Thanks for your suggestion, I will check how to work on it.

[Heavens]

Originally Posted by kiDBk

Thanks for your suggestion, I will check how to work on it.

I see 4.0 on the website to download firmware.

_id	"67ed313bb1c3a41284d208dc"
updatedAt	"2025-04-10T08:15:14.172Z"
createdAt	"2025-04-02T12:44:43.641Z"
md5	"a56691011d75793866b02a1b5654d37f"
model	"TabMiniC"
submodel	""
brand	"ONYX"
fingerprint	"Onyx/TabMiniC/TabMiniC:11/2025-04-02_10-23_v4.0-rel_6d15a71551/49343:user/release-keys"
buildType	"user"
buildNumber	49343
buildDisplayId	"2025-04-02_10-23_v4.0-rel_6d15a71551"
excludeGroups	false
parentFingerprint	""
force	false
__v	0
availableCount	0
whitelistMAC	[]
size	1846144324
betaGroups	[]
downloadUrlList	
0	"http://firmware-us.boox.com/a56691011d75793866b02a1b5654d37f/update.upx"

[Heavens]

I was able to flash to global rom without any issues after doing a bit of searching putting pieces together. I figured I'd put together a little guide here in case anyone else is looking.

As it stands you can get Tab Mini C on 4.0 version. I downloaded it using the URL string in prior posts.

http://data.onyx-international.cn/api/firmware/update?where={%22buildNumber%22:0,%22buildType%22: %22user%22,%22deviceMAC%22:%22%22,%22lang%22:%22en _US%22,%22model%22:%22TabMiniC%22,%22submodel%22:% 22%22,%22fingerprint%22:%22%22}

After you download the firmware needed, you do need to decode it following Renate's instructions on the github located here.

https://github.com/Hagb/decryptBooxUpdateUpx

Go ahead and grab platform tools so you can boot into ADB.

https://developer.android.com/tools/releases/platform-tools

You will also need to boot into EDL so grab the EDL.exe and Zadig drivers from here.

https://www.temblast.com/edl.htm
https://zadig.akeo.ie/

Last you'll need your firehose loader. That will also be on the temblast site. We will get to that shortly though.

First, I am not responsible for anything that happens to your device. Please make a full raw backup before performing ANY TYPE of modifications.

Step 1.

Extract Platform tools and plug in your device using the provided cable or EDL cable you may have. You will need to go to settings and place the device in USB debugging mode. Always Allow the key and click okay. Within the platform tools folder you can hold shift and right click the window and select "Open in terminal."

Once you have your terminal open you will run adb.exe devices. It should show your device and it should be connected. After that run adb.exe reboot edl.

Step 2.

Open up Zadig driver and find your USB book device and install driver. Only select your device and change no other settings. Once that is finished open up the folder the edl.exe is in and hold shift and right click and select "Open in terminal."

Type "edl.exe" to run the program and you should see "Found EDL 9008". Then run "edl.exe /L". You should get a HWID and device info. I then searched for my HWID here and downloaded the firehose loader.

https://www.temblast.com/ref/loaders.htm

Rename the loader that matches your device and then run "edl.exe /Lnameofloader.bin" Obviously place the name of your loader after the L. You should get a "waiting for Firehose... ok"

Step 3.

DO A FULL BACKUP OF YOUR SYSTEM HERE.

Run the command "edl.exe /u /g" and view how many LUN numbers you have. Then do "edl.exe /u0 /r backup0.img" and change the u0 and backup0 to how many LUNs you have. I had 5 so the next would be edl.exe /u1 /r backup1.img etc.

This will take some time as it's doing a FULL backup of your system.

Step 4.

After that is all complete run "edl.exe /z" to reboot your system. Please follow the instructions on the decryption github link above and decrypt the update file. Once your Boox is rebooted open back up ADB and type in "adb.exe reboot recovery" this will put your device into recovery mode. Swipe up and down to change selection. Highlight Apply Update from ADB. From your console if you type "adb.exe devices" you should see "sideload" now.

Make sure the update.zip is in the same folder as your adb.exe. Run "adb.exe sideload update.zip" Once this completes you will be on international rom. I haven't had any wifi issue. Google Play works fine.

That's it! I personally did a factory reset from this point and even had it prompt me for a newer update of 6-20 for the tab mini c.

Hope this helps anyone else who might have been stuck.