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Reverting 3020v3 back to stock

Posted: Tue Apr 28, 2020 4:44 am
by staze
Hi All,

Curious if anyone knows how to convert an MR-3020v3.2 back to stock. I've tried just http://<meteoip>/cgi-bin/fwupdate.cgi, and the tftp method. Neither seem to work. fwupdate says the firmware isn't a supported format. tftp just never grabs the file.

Would like to convert this guy back to being a little travel router since I have a MB Nano SD now. =)

Thanks!

Re: Reverting 3020v3 back to stock

Posted: Tue Apr 28, 2020 5:18 am
by staze
Okay, got it! What a fun experience. lol

Grab the firmware from here: https://www.tp-link.com/in/support/down ... /#Firmware
Extract and rename to "tp_recovery.bin".
Remove the boot sector info using:
dd if=tp_recorvery.bin of=tp_recorvery_fixed.bin skip=257 bs=512

SCP the firmware to the device.
scp tp_recovery_fixed.bin root@10.0.0.2:/tmp/tp_recovery_fixed.bin

ssh into the device
ssh root@10.0.0.2

and run mtd
mtd -r write tp_recovery_fixed.bin firmware

Once it's rebooted and stayed a while, recommend powering off, holding "reset" and powering on. Hold reset for a good 20 seconds, then release.

Device should reboot, and come back up in router mode.