Posted: Thu Jul 09, 2020 17:28 Post subject: Multiple failed attempts to flash Archer C8 v1 v2
Hi, i have a c8 v1 I tried flashing C8 v1 in accordance with https://wiki.dd-wrt.com/wiki/index.php/TP_Link_Archer_C8 & somehow my device ended in a boot loop and kept restarting every 12-13 seconds... It was still accepting firmware via tftp (tried tplink & ddwrt) but that didn't resolve it, & while further tinkering via serial bricked it completely.
I then recovered via whole flash dump for C8 v2 & then again tried ddwrt flashing via this method as shown here https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1083450 hoping that I would be lucky this time but all I managed was loading the v1 firmware. Ddwrt flashing again sent the router to same bootloop, I again had to resort to direct chip flashing to recover.
Now,i dont want to remove the chip again so if anyone can tell me a way to flash the router to ddwrt (in case it fails, tftp recovery which works) I would appreciate it.
I have flashed ddwrt on so many routers but I haven't faced such a problem ever before. _________________ Plentiful WRT54G2v1
1 Archer C7 V4
1 941nd V3
All running DD-WRT
The release used was as suggested in the respective posts (30949, 30880). Unfortunately I did not save the serial output... Now in hindsight it seems obvious I should have.
One sure thing was tftp recovery did not recover the router at all, I tried both firmwares (it would fetch the file and once fetched reboot almost instantly, it didn't seem to program the flash at all) Ddwrt and official tplink, New & old firmwares were tried too.
Anyway foolproof method to try, a build that's sureshot working?
My unit is originally v1, it failed in flash.
I recovered via chip writing... It converted it to a v2 firmware then followed that link, it did flash the v1 firmware fine via tftp but ddwrt fails & sends it into infinite bootloop, no kind of resetting, hard reset (wifi or wps button) , or tftp brings it back.
Once I have written the v2 dump the device is basically v2 for all intents and purposes... I think only pcb layout has changed between v1 & v2 (maybe flash type too) but as a v2 and even after conversation to v1 as suggested in the link the device functions fine... Accepts tp link firmwares in accordance with v2 just fine.
It only failed after ddwrt flash when it was earlier v1.
It now also failed ddwrt flash when it is v2.
So i have tried ddwrt on (Archer_C8_V1_150515.zip) with device showing both v1 & v2 and it has failed both the times.
Also, again i will mention tftp recovery to tplink & ddwrt have failed for me both the times after trying to flash ddwrt.
Yes i tried hexediting when I am working with tplink thinking it is v2, but that didn't help either, it only helped in flashing tplink 150515 firmware to a v2 device which is otherwise not possible.
Upgrading /downgrading within tplink works fine.
Joined: 08 May 2018 Posts: 7621 Location: Texas, USA
Posted: Thu Jul 09, 2020 20:27 Post subject:
There has to be a conflict somewhere. But I can only speculate without any tangible information other than what has been given so far. So, whenever you can actually provide something to help troubleshoot the issue, then maybe we can get somewhere.
This might help you with some additional information that can be gleaned via serial console: