You can try this procedure to unbrik:
Imho you flashed openwrt into ubi2 which is wrong...too you didn't unlock Zhal by setting EngDebugFlag which allows having access to that console you were trying to access to.
You can try this procedure to unbrik:
Imho you flashed openwrt into ubi2 which is wrong...too you didn't unlock Zhal by setting EngDebugFlag which allows having access to that console you were trying to access to.