Can't get my archer c7 unbricked.. been trying all weekend

Installing and Using OpenWrt
42

Hello

I have the same problem but I am new and can not do what has been done here

I tested all firmware Acher C7 V2 and firmware LEDE

here is a log of my problem

TFTP from server 192.168.0.66; our IP address is 192.168.0.86
Filename 'ArcherC7v2_tp_recovery.bin'.
Load address: 0x80060000
Loading: ############################################################## #################
       ################################################## ###############
therefore
Bytes transferred = 16252928 (f80000 hex)
original_product_id = ffffffff
 original_product_ver = ffffffff
 original_resvered_id = ffffffff
 original_special_id =
 recovery_product_id = c7000002
 recovery_product_ver = 01
 recovery_resvered_id = 00
 recovery_support_list =
 compare special, ret: 0
auto update firmware: product id verify fail!
Autobooting in 1 seconds
## Booting image at 9f020000 ...
   Uncompressing Kernel Image ... Stream with EOS marker is not supportedLZMA ER
ROR 1 - must RESET board to recover

U-Boot 1.1.4 (Mar 5 2018 - 13:57:29)

ap135 - Scorpion 1.0DRAM:
Sri
Scorpion 1.0
ath_ddr_initial_config (179): (32bit) ddr2 init
tap = 0x00000003
Tap (low, high) = (0x3, 0x1c)
Tap values ​​= (0xf, 0xf, 0xf, 0xf)
128 MB

I am french my english is basic thank you for your help

43

Suggests that the image you are uploading is not the right format.

From the last time I needed to recover my Archer C7v2 by TFTP

[jeff@miniup ~]$ ls -l /private/tftpboot/
total 59820
lrwxr-xr-x  1 root  wheel        61 Feb 21  2018 ArcherC7v2_tp_recovery.bin -> lede-17.01.4-ar71xx-generic-archer-c7-v2-squashfs-factory.bin
[...]

Note that this is an old image and a current -squashfs-factory.bin should work as well.

44

Hello

After a lot of tests I managed to change the firmware
From the offset 0x40 you have to set "ff ff ff ff ff ff ff ff ff" which replaces the following values:
original_product_id = ffffffff
original_product_ver = ffffffff
original_resvered_id = ffffffff

this allows to pass the check.

I have not yet arrived to deliver the right values but the modem works perfectly with the latest version of openwrt

I am still looking to change these values but I have not found for the moment.

thank you

45

For me worked set this values to 00:

original_product_id = 00
original_product_ver = 00