Can't upgrade/boot the device

Technical Support
1

I tried to write uboot environment with "fw_setenv jtag=disable"
with /etc/fw_env.config contents:
/dev/mmcblk0 0x80000 0x8000

and after that system doesn’t boot anymore😣. Just keeps resetting over an over.

GXL:BL1:9ac50e:a1974b;FEAT:ADFC318C;POC:3;RCY:0;EMMC:0;READ:0;0.0;CHK:0;
TE: 104302

BL2 Built : 13:48:56, Sep 23 2016.
gxl g7459bd4 - jianxin.pan@droid06

set vcck to 1120 mv
set vddee to 1000 mv
Board ID = 6
CPU clk: 1200MHz
DQS-corr enabled
DDR scramble enabled
DDR3 chl: Rank0+1 @ 768MHz - PASS
Rank0: 1024MB(auto)-2T-11
Rank1: 1024MB(auto)-2T-11
DataBus test pass!
AddrBus test pass!
-s
Load fip header from eMMC, src: 0x0000c200, des: 0x01400000, size: 0x00004000
New fip structure!
Load bl30 from eMMC, src: 0x00010200, des: 0x01100000, size: 0x0000d600
Load bl31 from eMMC, src: 0x00020200, des: 0x10100000, size: 0x00015400
Load bl33 from eMMC, src: 0x00038200, des: 0x01000000, size: 0x000a5c00
aml log : SIG CHK : 300 for address 0x01000000
reset…

Is it possible to mount emmc as a device to linux maybe and dd the image there?
How to bring it back to life? It’s the only device I have others still on the way. So my work stopped completely.
Help me please

p.s.
I think I’ll try to boot from SD and fix it somehow…

2

Hi kkkkk,

Please try MRegister Mode to enter upgrade mode, and upgrade via an USB cable.

Thanks.

3

Yep, that helped. Thank you.
But I’ve lost all the data😖
If only there were some way to mount vim’s emmc as a disk and make a normal backup with dd if=/dev/vim of=backup.img and restore as easy as dd if=backup.img of=/dev/vim