Back to Stock Factory Firmware Linksys E4200 V2? OpenWrt FW to Linksys FW

[DjiPi]

There might be hope to restore a stock firmware using an old version of LEDE maybe:

Ea4500 loop reboot / only failsafe working

Calgarian, As hnyman said, they are pretty much the same thing. When ssh'ing into it, the /etc/banner should spell out 18.06.2. Going forward, you can (1) flash viper-squashfs-factory from Linksys stock firmware's Web UI or (2) sysupgrade in OpenWRT with viper-squashfs-sysupgrade. The older version of sysupgrade (LEDE 17.01.4?) can flash Linksys' stock firmware to another partition. I did it by booting from a USB drive. EA4500 is one of most flash-friendly routers, with 2 boot partitions and …

@fbradyirl: Could you be kind enough, since your E4200v2 is your test machine, to try this and see if you can get back on stock firmware please:

1. Using Luci, flash LEDE 17.01.4 Factory/Sysupgrade (might not work from OpenWrt 18 and require -F)
2. Within LEDE, flash stock firmware

If this is successfull with E4200v2, I'll document the whole thing in the Wiki (both E4200v2 and E4500 would then be confirmed to be recoverable this way).