TP-LINK Archer C9(UN) V2.0 - brick after flashing r50927

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mvrk
DD-WRT Novice


Joined: 20 Oct 2009
Posts: 44
Location: Czech Republic

PostPosted: Fri Nov 25, 2022 14:04    Post subject: TP-LINK Archer C9(UN) V2.0 - brick after flashing r50927 Reply with quote
Hi

today i received my Archer C9(UN) V2.0
i flashed dd-wrt (r50927):
https://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2022/11-21-2022-r50927/tplink_archer-c9v2/factory-to-ddwrt.bin

the flash process seemed to go until the end fine, showed it was going to reboot, and after reboot it lights up the power light, then all lights go up and all lights go down and seems it restarts, and goes like this in loop.

I tried already the process to serve the original firmware via tftp as described here:
https://wiki.dd-wrt.com/wiki/index.php/TP_Link_Archer_C9

I tried with these stock firmware's:
https://www.tp-link.com/en/support/download/archer-c9/v2/#Firmware
https://static.tp-link.com/Archer%20C9(UN)_V2_170511.zip
https://static.tp-link.com/res/down/soft/Archer_C9(UN)_V2_160517.zip
https://static.tp-link.com/res/down/soft/Archer_C9_V2_160315.zip

but no luck, still going with all lights up and down loop.

Anyone has any idea how to unbrick my router?

_________________
Netgear R9000
DD-WRT v3.0-r55109 std (02/27/24)
Router, AP, WDS, VAPs, SFE off
Firewall / NAT / VLANs
DNS / DHCP / DDNS / SSH / NTP / Syslog / Cron
Wireguard / OpenVPN
USB Storage / Entware (LIGHTTPD & TFTPD)
2.4GHz: Vanilla, N/G, VHT40, LDPC, Disassoc Low ACK, Short Preamble, Short GI, Airtime Fairness, WMM, ACK Timing 500, WPA2 (AES), WPA2 ENTP (AES)
5GHz: DD-WRT, AC/N, VHT80, Disass Low ACK, Shrt Preamble/GI, Singl Beamforming, Airt Fairness, WMM, ACK Time 500, WPA2(AES), WPA2 ENTP(AES)

TP-Link Archer C7 v2
DD-WRT v3.0-r55109 std (02/27/24)
Router, AP, WDS Station, VAPs, SFE off
SSH / NTP / Syslog / Cron
USB Storage / Entware (LIGHTTPD & TFTPD)
2.4GHz: N/G, VHT40, LDPC, Disassoc Low ACK, Short Preamble, Short GI, Airtime Fairness, WMM, ACK Timing 500, WPA2 (AES), WPA2 ENTP (AES)
5GHz: DD-WRT, AC/N, VHT80, Disassoc Low ACK, Short Preamble, Short GI, Airtime Fairness, WMM, ACK Timing 500, WPA2 (AES), WPA2 ENTP (AES)
Sponsor
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 12917
Location: Netherlands

PostPosted: Fri Nov 25, 2022 14:12    Post subject: Reply with quote
Have you found the wiki: https://wiki.dd-wrt.com/wiki/index.php/TP_Link_Archer_C9 ?
_________________
Routers:Netgear R7000, R6400v1, R6400v2, EA6900 (XvortexCFE), E2000, E1200v1, WRT54GS v1.
Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
mvrk
DD-WRT Novice


Joined: 20 Oct 2009
Posts: 44
Location: Czech Republic

PostPosted: Fri Nov 25, 2022 14:35    Post subject: Reply with quote
egc wrote:
Have you found the wiki: https://wiki.dd-wrt.com/wiki/index.php/TP_Link_Archer_C9 ?


yes, like i mentioned, if followed the procedure on the wiki to serve the original firmware via tftp but still no go.

_________________
Netgear R9000
DD-WRT v3.0-r55109 std (02/27/24)
Router, AP, WDS, VAPs, SFE off
Firewall / NAT / VLANs
DNS / DHCP / DDNS / SSH / NTP / Syslog / Cron
Wireguard / OpenVPN
USB Storage / Entware (LIGHTTPD & TFTPD)
2.4GHz: Vanilla, N/G, VHT40, LDPC, Disassoc Low ACK, Short Preamble, Short GI, Airtime Fairness, WMM, ACK Timing 500, WPA2 (AES), WPA2 ENTP (AES)
5GHz: DD-WRT, AC/N, VHT80, Disass Low ACK, Shrt Preamble/GI, Singl Beamforming, Airt Fairness, WMM, ACK Time 500, WPA2(AES), WPA2 ENTP(AES)

TP-Link Archer C7 v2
DD-WRT v3.0-r55109 std (02/27/24)
Router, AP, WDS Station, VAPs, SFE off
SSH / NTP / Syslog / Cron
USB Storage / Entware (LIGHTTPD & TFTPD)
2.4GHz: N/G, VHT40, LDPC, Disassoc Low ACK, Short Preamble, Short GI, Airtime Fairness, WMM, ACK Timing 500, WPA2 (AES), WPA2 ENTP (AES)
5GHz: DD-WRT, AC/N, VHT80, Disassoc Low ACK, Short Preamble, Short GI, Airtime Fairness, WMM, ACK Timing 500, WPA2 (AES), WPA2 ENTP (AES)
mvrk
DD-WRT Novice


Joined: 20 Oct 2009
Posts: 44
Location: Czech Republic

PostPosted: Fri Nov 25, 2022 16:45    Post subject: Reply with quote
I fixed the issue, for some reason serving the firmware via tftp using linux tftp server doesn't work. I did now using tftpd64 on Windows and it downloaded the original firmware and the router its working fine now.
_________________
Netgear R9000
DD-WRT v3.0-r55109 std (02/27/24)
Router, AP, WDS, VAPs, SFE off
Firewall / NAT / VLANs
DNS / DHCP / DDNS / SSH / NTP / Syslog / Cron
Wireguard / OpenVPN
USB Storage / Entware (LIGHTTPD & TFTPD)
2.4GHz: Vanilla, N/G, VHT40, LDPC, Disassoc Low ACK, Short Preamble, Short GI, Airtime Fairness, WMM, ACK Timing 500, WPA2 (AES), WPA2 ENTP (AES)
5GHz: DD-WRT, AC/N, VHT80, Disass Low ACK, Shrt Preamble/GI, Singl Beamforming, Airt Fairness, WMM, ACK Time 500, WPA2(AES), WPA2 ENTP(AES)

TP-Link Archer C7 v2
DD-WRT v3.0-r55109 std (02/27/24)
Router, AP, WDS Station, VAPs, SFE off
SSH / NTP / Syslog / Cron
USB Storage / Entware (LIGHTTPD & TFTPD)
2.4GHz: N/G, VHT40, LDPC, Disassoc Low ACK, Short Preamble, Short GI, Airtime Fairness, WMM, ACK Timing 500, WPA2 (AES), WPA2 ENTP (AES)
5GHz: DD-WRT, AC/N, VHT80, Disassoc Low ACK, Short Preamble, Short GI, Airtime Fairness, WMM, ACK Timing 500, WPA2 (AES), WPA2 ENTP (AES)
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