Posted: Tue Aug 10, 2010 22:41 Post subject: Motorola WR850G Downgrade Problem
Something hiccuped in my WDS setup requiring me to reinitialize everything as it bricked my 2 WR850G I use as WDS APs (my hub router is a WRT54GL running Thibor). I still don't know the cause, but I was able to get most of it back in order. Here's the problem:
I was running V23SP2 on both and was able to get 1 re-inited and back in service. The other bricked WR850G gave me fits, but I was finally able to TFTP the original firmware back on to it and the install the micro and the std versions of V24, but I couldn't get it to play in the WDS.
I chose to flash it back down to V23SP2 to make it identical to the other and while the flash loaded OK, I can access the sys-info page, but not login to it.
I've tried hard resets, but it doesn't revert back to the default settings. I've also tried TFTP, but it won't take any flash. I didn't have the SSH flag set, so I can't use that either.
The L/P should be root/admin, but nothing I try works.
Anyone ever have this happen to them? What was your solution?
use TFTP to flash back to original FW on both devices
I am unable to get TFTP to load ANY firmware, including the original Motorola firmware. It appears I no longer have a window at boot time to invoke a TFTP transfer.
I've tried many 30/30/30 hard resets as well as the normal power-up to get a successful TFTP transfer, but I have had zero luck.
hmm... strange
how about serial or JTAG and do a nvram erase?
Don't know how to do either of those and I'm starting to question if this is worth the effort. Doesn't JTAG require cracking the case and soldering? I suspect if I need to crack the case I'll use a hammer rather a screwdriver.
if you do not have any soldering skills try again TFTP...
be aware that the time window after powering up the device is only very short (1-4sec) where router accepts TFTP transfers - best to use a switchable power plug. If you miss that point try again and again...
I'm having the same issue.
My WR850G was working well with DD-WRT v23 SP2 (09/15/06) std. I've done a reset and now none of the the combination of user/password (root/admin, root/motorola, admin/root, admin/motorola, root/my-previous-password) works.
However, I've tried "root" and "admin" as the username/password, as well as "<blank>" and "admin", "root"/"<old password>", "admin"/"motorola", etc. etc., and I cannot log in. I've done hard 30/30/30 resets several times and it doesn't change anything. I've tried to Telnet and PUTTY in with no luck. I've also tried to tftp back to another firmware version, but I can't get it rewrite the firmware. I've tried to search a bunch of places, and no one seems to have had this problem. :(
Does anyone have any advice? Or is my router bricked? It seems that since I can still see the status screen of DD-WRT at 192.168.1.1, it should be recoverable, but I'm out of ideas.
I'm trying to upload a fresh firmware dd-wrt.v24-14853_VINT_micro_wr850g.bin but the tftp client on my computer is getting connection timed out.
It is possible to reset the password of the unit? how?
