[HELP] xgody 3gb 32g sS912

[bumerc]

khadas vim 2 is a q200 board, it is not supported and you have a fake box of it. Use original bootloader and dtb

[nmocruz]

not sure, I mention khadas vim 2, but was armbian booting, armbian did 4 or more reboots and end up to booting, I installed the armbian and then I found that the /proc/model was displaying khadas vim 2.
I belive the firmaware that I had to install armbian had a multi dtb, or was somehow looping to get one working configuration. this was the one selected

[nmocruz]

I posted a decompiled version of dtb file
https://gist.github.com/nmocruz/a0baaf5 ... 2042131624

[bumerc]

this is a single dtb, not a multi dtb, it has nothing to do with your problem. A gxm_q201_v1 uboot does not run on a gxm_q200 device, I personally tested that and i can't help you without logs

[nmocruz]

I splited the dtb and puted only the related *_3g decompile. I gonna try to get logs

[nmocruz]

I have usb to serial https://www.aliexpress.com/item/3304089 ... 4c4d2RHNpc

But I'm but lost due lack of information on the board to get this pluged, can anyone give a look to the pictures shared on this post to point where should I connect this?

[em3ka]

UART pins are between reset switch and USB port on the edge of the PCB.

tutorial:
viewtopic.php?f=16&t=453

[nmocruz]

this box is the same as the r tv s10, ddr4.

I was checking the burning log:
[00:13:30 567][HUB3-4][Inf]--Write initial succeed
[00:13:30 567][HUB3-4][Inf]--Upload encrypt at 0xc8100228
[00:13:30 567][HUB3-4][Inf]--ulValue = 0xbdfc31bc
[00:13:30 567][HUB3-4][Inf]--File change to DDR_ENC.USB
[00:13:30 567][HUB3-4][Inf]--Read encrypt value succeed
[00:13:30 567][HUB3-4][Inf]--Download DDR_ENC.USB,size: 0!
[00:13:30 567][Global][Err]--DDR_ENC.USB
[00:13:30 567][Global][Err]--DDR_ENC.USB
[00:13:30 567][HUB3-4][Err]--Read item data error, code -1
[00:13:30 567][Global][Err]--DDR_ENC.USB
[00:13:30 572][HUB3-4][Err]--[0x10103005]Romcode/Initialize DDR/Download buffer/Read item data failed
[00:13:30 572][HUB3-4][Inf]--Close device handle 0x000009c0

Unpacking the original and the atv firmware, I see a difference on the presence of DDR.USB and DDR_ENC.USB on the original firmware, the log seems looking form this DDR_ENC.USB and then complain about reading error.
I'm wondering if the device is not expecting to have a DDR_END.USB on the firmware.

[bumerc]

ulValue = 0xbdfc31bc
[00:13:30 567][HUB3-4][Inf]--File change to DDR_ENC.USB
[00:13:30 567][HUB3-4][Inf]--Read encrypt value succeed
[00:13:30 567][HUB3-4][Inf]--Download DDR_ENC.USB,size: 0!
[00:13:30 567][Global][Err]--DDR_ENC.USB
[00:13:30 567][Global][Err]--DDR_ENC.USB
[00:13:30 567][HUB3-4][Err]--Read item data error, code -1

ulValue = 0xbdfc31bc

BL1 (processor ROM) is programmed for a secure boot, you can only use original image from the manufacturer.

[nmocruz]

Ok, makes sense, but one guy on freaktab was able to repack the original firmware with other system+logo partitions. Was the only way that I got this device rooted, is working fine with the custom from shared by that guy.

I was able to unpack with the linux toolkit, and repack with other system partition, in this way it writes the firmware, but may due compatibility issues it doesn't boot. I'm learning, so don't know yet what is failing, the kernel or some related with manifest.xml present in the original firmware.