OpenWrt Images found for Omega2+
Ive found this: https://openwrt.org/toh/hwdata/onion/onion_omega2plus
And in the button are some links for OpenWRT Images for the Omega2.
Can i test this images and recover the orignal firmware later?
yes. you can flash openwrt, test, and if you do not like it then flash omega2+. i did it about 1 month ago. i'm now back with omega2+ firmware. one thing i noticed about openwrt is it seems that for security reasons the wifi is disabled at first so you will need to enable it. after enabled, at least on the build i got, IPv4 is not implemented , rather it seems IPv6 is the default so you either have to have an IPv6 network ready setup or you need to be able to implement IPv4 through the settings. i could not get IPv4 setup so i returned to omega2+. be aware that if not on IPv6 network or unable to implement IPv4 then the only way i could find to flash the omega2+ firmware was using the emergency usb recovery method via boot process select. but actually, i encourage you to try it and report your experiences in this thread cause it may be i just failed completely as a result of being totally clueless in my attempts to get it running. i've read other people say they have been successful but never have read the process used. good luck.