Boot loop TP-Link Archer C9 v1 (Europe)
Hello,
I have a TP-Link Archer C9 v1 that is stuck in a boot loop after beeing unplug for 2 weeks. The symptom is: the power LED is blinking, after a few seconds all the leds are on, afterwards the all the led are off and power LED is again blinking.
What I tried with no success:
1) UNBRICK/Recovery TP-Link Archer C9 WIFI Router Without A Serial Connection How To (The tutorial posted by Richard Lloyd)
https://www.youtube.com/watch?v=AU8RyW82Z2M
Same symptoms using the c9v1_un-up-ver4-1-0-P31[20160517-rel35411].bin from the TP Link Archer C9 V1 Europe support page
2) UNBRICK/Recovery TP-Link Archer C9 Router (Version 1) Step-By-Step Guide Using Serial/USB Connection (The tutorial posted by Richard Lloyd)
https://www.youtube.com/watch?v=fme7kwTkttk
Again, the same symptoms using flash0.trx and mtd3.bin posted in the description section
3) Flashing the memory
Tools used:
CH341A (Black version) moded for 3.3V
The dump posted by Heinz on the Polish TP-Link forum (https://tplinkforum.pl/t/archer-c9-v1/8191)
After removing the heatsink I observed that instead of having a Spansion FL128SAIF00 serial flash memory, on the board it was a WinBond 25Q128FVFG serial flash memory.
Even with this surprise, i continued to desolder the memory.
1st attempt
Programming with CH341A programmer software v1.29
-erase, write, verify, saved the bin and compared with C9-factoryFullFlash.bin, all ok, no errors or differences in the bin files.
Result: the same symptom
2nd attempt
On CentOS 7 with flashrom
-erase, write, verify the memory with C9-factoryFullFlash.bin, all ok no errors.
Result: the same symptom
For both attempts the memory was written outside the PCB and resoldered after each flashing.
Now the weird part, if I flash with the latest stable OpenWRT build via tftpd, the router starts. WAN ok, LAN OK, USB ports ok, except for the wireless because the router has a Broadcom radio.
Basically I've run out of ideas how the make the router function with the original firmware, any help/suggestion will be appreciated.
Hello,
I have a TP-Link Archer C9 v1 that is stuck in a boot loop after beeing unplug for 2 weeks. The symptom is: the power LED is blinking, after a few seconds all the leds are on, afterwards the all the led are off and power LED is again blinking.
What I tried with no success:
1) UNBRICK/Recovery TP-Link Archer C9 WIFI Router Without A Serial Connection How To (The tutorial posted by Richard Lloyd)
https://www.youtube.com/watch?v=AU8RyW82Z2M
Same symptoms using the c9v1_un-up-ver4-1-0-P31[20160517-rel35411].bin from the TP Link Archer C9 V1 Europe support page
2) UNBRICK/Recovery TP-Link Archer C9 Router (Version 1) Step-By-Step Guide Using Serial/USB Connection (The tutorial posted by Richard Lloyd)
https://www.youtube.com/watch?v=fme7kwTkttk
Again, the same symptoms using flash0.trx and mtd3.bin posted in the description section
3) Flashing the memory
Tools used:
CH341A (Black version) moded for 3.3V
The dump posted by Heinz on the Polish TP-Link forum (https://tplinkforum.pl/t/archer-c9-v1/8191)
After removing the heatsink I observed that instead of having a Spansion FL128SAIF00 serial flash memory, on the board it was a WinBond 25Q128FVFG serial flash memory.
Even with this surprise, i continued to desolder the memory.
1st attempt
Programming with CH341A programmer software v1.29
-erase, write, verify, saved the bin and compared with C9-factoryFullFlash.bin, all ok, no errors or differences in the bin files.
Result: the same symptom
2nd attempt
On CentOS 7 with flashrom
-erase, write, verify the memory with C9-factoryFullFlash.bin, all ok no errors.
Result: the same symptom
For both attempts the memory was written outside the PCB and resoldered after each flashing.
Now the weird part, if I flash with the latest stable OpenWRT build via tftpd, the router starts. WAN ok, LAN OK, USB ports ok, except for the wireless because the router has a Broadcom radio.
Basically I've run out of ideas how the make the router function with the original firmware, any help/suggestion will be appreciated.
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