Archer C7 : issue upgrade/downgrade after r33342, be careful

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jean019
DD-WRT User


Joined: 25 Apr 2015
Posts: 124

PostPosted: Sat Sep 09, 2017 21:35    Post subject: Archer C7 : issue upgrade/downgrade after r33342, be careful Reply with quote
Hi,
I just updated to r33342 on my C7 v2 to test it.
However, because of USB issue, I would like to downgrade...
It doesn't work !

Using the web interface, when I reboot I still have the r33342.
When I want to flash by telnet the r33006 using :
Code:
cd /tmp
wget webflash name here.bin
write webflash name here.bin linux


hash r33006 is ok : 5708bed58561bdeed3ab2c3f8379c80c
but I get :

Code:
root@DD-WRT:/tmp# write tplink_archer-c7-v2.bin linux
Image too big for partition: linux
linux: Invalid argument


what's the way to force downgrade ?
Thanks

_________________

netgear R9000 : r49934 (Vanilla)
netgear R7800 : [n°1] r50595 (Vanilla) / [n°2] r49934 (Vanilla) / [n°3] r49934 (Vanilla) / [n°4] r49934 (Vanilla)
tp-link archer C7v2 : r49934 (Vanilla)
tp-link archer C5v1.2@C7v2 : r33772


Last edited by jean019 on Sun Sep 24, 2017 19:05; edited 1 time in total
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jean019
DD-WRT User


Joined: 25 Apr 2015
Posts: 124

PostPosted: Sat Sep 09, 2017 22:34    Post subject: Reply with quote
no one ?
That r33006 image was the one I use before, so I don't understand why it seems too big.
What would be the way to force downgrade ?

_________________

netgear R9000 : r49934 (Vanilla)
netgear R7800 : [n°1] r50595 (Vanilla) / [n°2] r49934 (Vanilla) / [n°3] r49934 (Vanilla) / [n°4] r49934 (Vanilla)
tp-link archer C7v2 : r49934 (Vanilla)
tp-link archer C5v1.2@C7v2 : r33772
jean019
DD-WRT User


Joined: 25 Apr 2015
Posts: 124

PostPosted: Sat Sep 09, 2017 22:55    Post subject: Reply with quote
I tried the webrevert method here...
http://www.dd-wrt.com/phpBB2/viewtopic.php?p=1089489#1089489

Now it's worse !
every lan ports on the router is blinking, I have no access at all.
Power LED, star LED and wifi LED are always on.
I don't know what would be the ip, my LAN connection keeps disconnecting.

What can I do ? Sad

_________________

netgear R9000 : r49934 (Vanilla)
netgear R7800 : [n°1] r50595 (Vanilla) / [n°2] r49934 (Vanilla) / [n°3] r49934 (Vanilla) / [n°4] r49934 (Vanilla)
tp-link archer C7v2 : r49934 (Vanilla)
tp-link archer C5v1.2@C7v2 : r33772
jean019
DD-WRT User


Joined: 25 Apr 2015
Posts: 124

PostPosted: Sun Sep 10, 2017 0:04    Post subject: Reply with quote
my router was bricked, the light sequence was the one on the following video :
https://www.youtube.com/watch?v=Fi0pC_ON5Vo
and the debrick method works

_________________

netgear R9000 : r49934 (Vanilla)
netgear R7800 : [n°1] r50595 (Vanilla) / [n°2] r49934 (Vanilla) / [n°3] r49934 (Vanilla) / [n°4] r49934 (Vanilla)
tp-link archer C7v2 : r49934 (Vanilla)
tp-link archer C5v1.2@C7v2 : r33772
khoanb1
DD-WRT Novice


Joined: 03 Sep 2017
Posts: 14

PostPosted: Mon Sep 18, 2017 14:06    Post subject: Reply with quote
did you try tftp to revert your C7 to stock firmware?
jean019
DD-WRT User


Joined: 25 Apr 2015
Posts: 124

PostPosted: Sun Sep 24, 2017 18:55    Post subject: Reply with quote
the procedure on the video is the TFTP update of the original Tp-link stock firmware. It's not necessary to solder anything.
My C7 P/N are < 215Cxxxxx

And it works yes, at least with firmware Archer_C7_V2_150304
We are not alone : http://svn.dd-wrt.com/ticket/5972

_________________

netgear R9000 : r49934 (Vanilla)
netgear R7800 : [n°1] r50595 (Vanilla) / [n°2] r49934 (Vanilla) / [n°3] r49934 (Vanilla) / [n°4] r49934 (Vanilla)
tp-link archer C7v2 : r49934 (Vanilla)
tp-link archer C5v1.2@C7v2 : r33772
fkoops
DD-WRT Novice


Joined: 17 Sep 2017
Posts: 4
Location: The Netherlands

PostPosted: Sun Sep 24, 2017 20:33    Post subject: Reply with quote
My experience (what works for me) is that when you want to upgrade or just want to flash to dd-wrt you first need to downgrade to the stock TP-link FW v150427 using TFTP in pre-boot mode also called recovery mode.
After that you can flash from the stock TP-link GUI to the newest dd-wrt FW using factory-to-ddwrt.bin
wufwufwuf
DD-WRT Novice


Joined: 26 Apr 2016
Posts: 9

PostPosted: Sat Sep 30, 2017 14:37    Post subject: Thanks for the tip, saved my life! Reply with quote
Had similar experience when Archer C7 v2 stopped updating beyond the 9/9/17 version (r33342), and tried telnet erase nvram, tried tftp new versions, etc all to no avail.

The above downgrade to stock method however worked well for me, now recklessly back into r33413 again!

Hope we don't have to do the same thing here once again for the next upgrade - fingers crossed the devs iron this issue out soon as ticket #5972 seems still open at time of writing, see svn.dd-wrt.com!

Thank you! One thing worth nothing is that you can see the progress (though much less detail) of the flashing of stock firmware in the 'Log viewer' tab of the tftp app, in case you have not discovered this trick...
jean019
DD-WRT User


Joined: 25 Apr 2015
Posts: 124

PostPosted: Sat Sep 30, 2017 17:32    Post subject: Reply with quote
I think you have the answer... Crying or Very sad
http://www.dd-wrt.com/phpBB2/viewtopic.php?p=1096635#1096635

_________________

netgear R9000 : r49934 (Vanilla)
netgear R7800 : [n°1] r50595 (Vanilla) / [n°2] r49934 (Vanilla) / [n°3] r49934 (Vanilla) / [n°4] r49934 (Vanilla)
tp-link archer C7v2 : r49934 (Vanilla)
tp-link archer C5v1.2@C7v2 : r33772
jean019
DD-WRT User


Joined: 25 Apr 2015
Posts: 124

PostPosted: Sat Oct 21, 2017 10:25    Post subject: Reply with quote
problem solved, at least in r33555.
_________________

netgear R9000 : r49934 (Vanilla)
netgear R7800 : [n°1] r50595 (Vanilla) / [n°2] r49934 (Vanilla) / [n°3] r49934 (Vanilla) / [n°4] r49934 (Vanilla)
tp-link archer C7v2 : r49934 (Vanilla)
tp-link archer C5v1.2@C7v2 : r33772
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