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2 ohm is possibly normal value for VCORE; compare with similar board.
Your problem is one of U7310/20/30 chips is burnt.
Need to change all 3 with FDMF6708N from reliable source.
FDMF3030 was also reported on the forum as tested replacement.
Then CPU is dead, stop to waste the time with this board...
BTW, I didn't mention FDMF6808N.
That is Apple proprietary chip, NEVER sold to other!
Of course, you can throw the money buying "NEW" FDMF6808N from chinese sellers...