Hi, I'm new to all of this and need help installing D-Link DWR-921 Ver: C3
After long days I was able to activate the JBOOT web recovery or at least I hope it is this (I attached a screenshot)
Asking for help please!
Note - I'm not sure the original system is installed on the product from the beginning. I got it from my ISP (I added a screenshot of the main page of the original system.)
If via JBOOT web interface doesn't work, it can be done on the command line with curl command: curl -F FN=@XXXXX.bin http://192.168.123.254/upg where XXXXX.bin is the name of the -factory.bin file.
your firmware web ui looks entirely different from mine, and I noticed that C3 comes with those differences based on where it's sold to. That might be a clue, maybe your router has a locked bootloader or whatever and cannot accept custom firmware, though I can't talk about mine being the other way just yet, I will update you if it worked for me what I did to put openwrt on mine.