bro, i have the same issue as you. but mine is maxis. i had tried to flashing the stock firmware or ddwrt but still doesnt work. it said "Flashing failed ERROR - the image you uploaded failed to pass verification. Please make sure to use an official update."

i think i had purchased a "brick" that cannot be usable to Maxis/Unifi. haha.

Any sifu out there able to help? i dont mind bricking the dir 882 since already consider a "brick" to me.