To activate UMA mode, remove the following SMDs: PL1401, PL2401, PU2401, PU1401, PQ2401, PQ2402, PQ2403, and QV3. Then shift RC1609 to RC1610.
Board view - https://www.badcaps.net/forum/troubl...87#post3210287
Board view - https://www.badcaps.net/forum/troubl...87#post3210287