* Please READ Before Beginning * No serial is necessary for these steps. You may setup a static ip on 192.168.1.1, netmask:255.255.255.0 if you would like during the "upgrade". You will to need the FW_EA6350V2_2.1.2.184309_prod.gpg.img, a google search will help you find the download. The back to ofw is actually the FW_EA6350V2_2.1.1.171422_prod.img so no need to download it. Go to FreshTomato Administration -> upgrade "click to check" after flashing, erase all data in NVRAM memory. Click, "Choose File", find and load the back-to-ofw.trx image now you are ready press "upgrade" to begin. Give it time at least 130 seconds but let it complete fully. Once done flashing, refresh the 192.168.1.1 address, you should be in Linksys GUI now navigate to the "connectivity icon" to update to the FW_EA6350V2_2.1.2.184309_prod.gpg.img firmware, "select choose file" and find where you downloaded the Linksys image "click start" follow the prompts to continue and confirm and reboot when prompted allow time to complete. Final step: Once done you can restore the defaults from utilities suitcase icon in Linksys "gui" follow the prompts to continue and reboot then the router wait till router is finished at the "Welcome prompt now the router is fully restored." Note* You may need to refresh the 192.168.1.1 ip address and undo any static ip connection if you had configured it...