[Request] Tab MiniC Firmware Download

[vuanh1408]

Originally Posted by Renate

It probably will be ok.
There could be some problems with system setting if things have changed.
For instance the format of /onyxconfig/eac_config has changed from JSON to MMKV.
(* not sure I got the filename exactly right)

If you have made a full, raw backup with EDL and you have the time, why not try?

Yeah. But the problem is i dont know how to put my device to edl using edl cable. I have 2 type of edl cable (working, coz i have no problem using it to put my Xiaomi phone and tablet to edl)
I follow this instruction, but didnt success with any of my Boox devices

Boot to edl mode with edl cable:
The easiest usage is if the device is off already.
Plug the cable into the desktop, push the shorting button,
plug the cable into the device, wait a second, release the shorting button.
More awkward with a powered device.
Plug both cable ends in, push shorting button, push power button 10+ seconds,
release power button, wait a second, release the shorting button.

[Renate]

There could be any number of problems.
It could be going to 9008 and you're not seeing it.
I would trust the cable with the micro USB tail on it because it must be V1.
But I don't know for a fact that the TabMiniC does do D+ (V1) detection.
Onyx could have pulled it.

[vuanh1408]

Originally Posted by Renate

There could be any number of problems.
It could be going to 9008 and you're not seeing it.
I would trust the cable with the micro USB tail on it because it must be V1.
But I don't know for a fact that the TabMiniC does do D+ (V1) detection.
Onyx could have pulled it.

But the way to enter edl that I quoted is no problem?

[Renate]

Originally Posted by vuanh1408

But the way to enter edl that I quoted is no problem?

Well, that's what I wrote so I am unanimous in it.

If your device has buttons there is also holding down buttons while it reboots.

A manufacturer can put whatever trickery they like in.
I've seem where you have to tap the top left and top right corners alternately.
I've seen where you have to send more than 50 (but less than 100) VT-100 backspaces to a UART.
They can also remove any shortcuts.

If you're really getting nowhere, you can open the case.
But I've seen both trivially easy and very sneaky EDL test points.

[vuanh1408]

Originally Posted by Renate

Well, that's what I wrote so I am unanimous in it.

If your device has buttons there is also holding down buttons while it reboots.

A manufacturer can put whatever trickery they like in.
I've seem where you have to tap the top left and top right corners alternately.
I've seen where you have to send more than 50 (but less than 100) VT-100 backspaces to a UART.
They can also remove any shortcuts.

If you're really getting nowhere, you can open the case.
But I've seen both trivially easy and very sneaky EDL test points.

Yeah. The method work ok, i try again and it's ok (just have to hold the short button like 5 sec). It talks firehose now. When i try to make a raw backup

edl /r tab8c.img

it returns

Found EDL 9008, configuring... ok
Requesting info on LUN 0...
<log value="ERROR: Failed to open the SDCC Device slot 0 partition 0" />
<log value="ERROR: Failed to open the device:1 slot:0 partition:0 error:0" />
<log value="ERROR: OPEN handle NULL and no error, weird 203949076" />
<log value="ERROR: Failed to open device, type:eMMC, slot:0, lun:0 error:3" />
Nope

Any ideas?

[Renate]

Originally Posted by vuanh1408

Any ideas?

Yes

edl /u /r tab8c.img

And what the heck is a Tab8C?
And why didn't you post the HWID and say what Firehose loader you are using?

[vuanh1408]

Originally Posted by Renate

Yes

edl /u /r tab8c.img

And what the heck is a Tab8C?
And why didn't you post the HWID and say what Firehose loader you are using?

It's Chinese version of Tab Mini C. I used a Tab Mini C loader from a reddit thread
Here's the HWID

HWID: 0014d0e100000000 (x3), JTAG: 0014d0e1, OEM: 0000, Model: 0000

I already backup using this. This is the same?

edl /u0 /r backup0.img
edl /u1 /r backup1.img
edl /u2 /r backup2.img
edl /u3 /r backup3.img
edl /u4 /r backup4.img
edl /u5 /r backup5.img

[vuanh1408]

I tried installing 3.5.4 Global firmware onto Tab8C running V4.0 chinese firmware. I used the built in recovery. It said the package is older, so no going back. I guess there is anti rollback

[Heavens]

Not sure if I should make a new post or reply here, but I figured I'd keep it all together. I was looking to flash my tab8c to the global rom. I was following this and tried to pull the API for 4.0 firmware and it doesn't seem to work. Does anyone know if this is still accessible or if you can even still flash global rom to the Tab8C?

[Heavens]

I apologize for the double post, it wouldn't let me edit. I did figure out my error in the API. I didn't have capital letters in the correct places. Here is the link for anyone who needs it.

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:%20%22%22}

I am still curious if it's safe to flash Tab8C with TabMiniC firmware. Will I need to root to do this? Would hate to brick my device.

[Renate]

Originally Posted by Heavens

Would hate to brick my device.

When doing anything radical it makes sense to use EDL to make a full, raw backup.
Ok, with large device sizes today that might take 30 minutes and make a file of 128 GB.

Important! Never "wipe" the user data or "factory reset".
That would invalidate any backup that you had previously made.