Hello

I have bricked my Archer C7 .

While searching for a solution I tried to use the TFTP method to bring it back to life .

It seems its stuck ( or in boot loop ) after it tries to boot .

I downloaded many fiirmaware recommended versions - yet I cannot get is work (I assume that due to this error ) 

"auto update firmware: product id verify fail!"

I tried manipulating the Product ID to 0Xff as described in https://community.tp-link.com/en/home/forum/topic/151859

Another thread

but changing 0X40 to 0X47 did not change the product ID .

Tried those 2 options as well

https://forum.openwrt.org/t/cant-get-my-archer-c7-unbricked-been-trying-all-weekend/14645/25

Any help will be highly appreciated 

Logs from the router for my all attempter FW uipgrades are below  :

U-Boot 1.1.4 (Aug  3 2017 - 16:39:33)

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
Flash Manuf Id 0xef, DeviceId0 0x40, DeviceId1 0x18
flash size 16MB, sector count = 256
Flash: 16 MB
Using default environment

*** Warning *** : PCIe WLAN Module not found !!!
In:    serial
Out:   serial
Err:   serial
Net:   ath_gmac_enet_initialize...
athrs_sgmii_res_cal: cal value = 0x6
No valid address in Flash. Using fixed address
No valid address in Flash. Using fixed address
ath_gmac_enet_initialize: reset mask:c02200
Scorpion  ----> S17 PHY *
Vlan config...
TEST: FINAL REG VAL after TX Calibration - 0x46000000
TEST: FINAL XMII VAL after RX Calibration - 0x56000000
TEST: FINAL ETH_CFG VAL after RX Calibration - 0x00028001
athrs17_reg_init: complete
: cfg1 0x80000000 cfg2 0x7335
eth0: ba:be:fa:xx:yy:zz
eth0 up
athrs17_reg_init_wan done
SGMII in forced mode
athr_gmac_sgmii_setup SGMII done
: cfg1 0x800c0000 cfg2 0x7214
eth1: ba:be:fa:xx:yy:zz
eth1 up
eth0, eth1
Setting 0x18116290 to 0x58b1214f
dup 1 speed 1000
Using eth1 device
TFTP from server 192.168.0.66; our IP address is 192.168.0.86
Filename 'ArcherC7v2_tp_recovery.bin'.
Load address: 0x80060000
Loading: ######################
done
Bytes transferred = 16252928 (f80000 hex)
original_product_id = 00
 original_product_ver = 00
 original_resvered_id = 00
 original_special_id = 0000;4555000
 recovery_product_id = ffffffff
 recovery_product_ver = ffffffff
 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 ... OK

Starting kernel ...

U-Boot 1.1.4 (Aug  3 2017 - 16:39:33)

ap135 - Scorpion 1.0DRAM:
sri
Scorpion 1.0
ath_ddr_initial_config(179): (32bit) ddr2 init
tap = 0x00000003
Tap (low, high) = (0x3, 0x1b)
Tap values = (0xf, 0xf, 0xf, 0xf)
128 MB
Flash Manuf Id 0xef, DeviceId0 0x40, DeviceId1 0x18
flash size 16MB, sector count = 256
Flash: 16 MB
Using default environment

*** Warning *** : PCIe WLAN Module not found !!!
In:    serial
Out:   serial
Err:   serial
Net:   ath_gmac_enet_initialize...
athrs_sgmii_res_cal: cal value = 0x6
No valid address in Flash. Using fixed address
No valid address in Flash. Using fixed address
ath_gmac_enet_initialize: reset mask:c02200
Scorpion  ----> S17 PHY *
Vlan config...
TEST: FINAL REG VAL after TX Calibration - 0x46000000
TEST: FINAL XMII VAL after RX Calibration - 0x56000000
TEST: FINAL ETH_CFG VAL after RX Calibration - 0x00028001
athrs17_reg_init: complete
: cfg1 0x80000000 cfg2 0x7335
eth0: ba:be:fa:xx:yy:zz
eth0 up
athrs17_reg_init_wan done
SGMII in forced mode
athr_gmac_sgmii_setup SGMII done
: cfg1 0x800c0000 cfg2 0x7214
eth1: ba:be:fa:xx:yy:zz
eth1 up
eth0, eth1
Setting 0x18116290 to 0x58b1214f
dup 1 speed 1000
Using eth1 device
TFTP from server 192.168.0.66; our IP address is 192.168.0.86
Filename 'ArcherC7v2_tp_recovery.bin'.
Load address: 0x80060000
Loading: #####################
done
Bytes transferred = 16252928 (f80000 hex)
original_product_id = 00
 original_product_ver = 00
 original_resvered_id = 00
 original_special_id = 0000;4555000
 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 ... OK

Starting kernel ...

U-Boot 1.1.4 (Aug  3 2017 - 16:39:33)

ap135 - Scorpion 1.0DRAM:
sri
Scorpion 1.0
ath_ddr_initial_config(179): (32bit) ddr2 init
tap = 0x00000003
Tap (low, high) = (0x3, 0x1b)
Tap values = (0xf, 0xf, 0xf, 0xf)
128 MB
Flash Manuf Id 0xef, DeviceId0 0x40, DeviceId1 0x18
flash size 16MB, sector count = 256
Flash: 16 MB
Using default environment

*** Warning *** : PCIe WLAN Module not found !!!
In:    serial
Out:   serial
Err:   serial
Net:   ath_gmac_enet_initialize...
athrs_sgmii_res_cal: cal value = 0x6
No valid address in Flash. Using fixed address
No valid address in Flash. Using fixed address
ath_gmac_enet_initialize: reset mask:c02200
Scorpion  ----> S17 PHY *
Vlan config...
TEST: FINAL REG VAL after TX Calibration - 0x46000000
TEST: FINAL XMII VAL after RX Calibration - 0x56000000
TEST: FINAL ETH_CFG VAL after RX Calibration - 0x00028001
athrs17_reg_init: complete
: cfg1 0x80000000 cfg2 0x7335
eth0: ba:be:fa:xx:yy:zz
eth0 up
athrs17_reg_init_wan done
SGMII in forced mode
athr_gmac_sgmii_setup SGMII done
: cfg1 0x800c0000 cfg2 0x7214
eth1: ba:be:fa:xx:yy:zz
eth1 up
eth0, eth1
Setting 0x18116290 to 0x58b1214f
dup 1 speed 1000
Using eth1 device
TFTP from server 192.168.0.66; our IP address is 192.168.0.86
Filename 'ArcherC7v2_tp_recovery.bin'.
Load address: 0x80060000
Loading: ########################
done
Bytes transferred = 16252928 (f80000 hex)
original_product_id = 00
 original_product_ver = 00
 original_resvered_id = 00
 original_special_id = 0000;4555000
 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 ... OK

Starting kernel ...