Very high chances for the htc recovery you are too lucky to find programmed emmc i remember once i also got a programmed flash chip the guy whow would be replacing has less hassels to face as he can try instantly without fiddling with a computer . Anyway later a flash will be needed and i am out of town so cant view the 900 kb picture on my 5610d will have a look after h get home
i have schematics of it i will tell what to check just wait