here is how to repair dead j210i flash by CRUISER

1- I used ufs and select Z200 model on ATRZ type , flash the phone with J210 flash ( J210_1250107_R2D_EMEA5 ) you can find this file on the forum.

2- Do init secblck and when the software ask for power on the phone disconnect the cable , reattach the battery and press power ON boutton on the phone it must stay pressed , then you connect the cable again and you clik yes on the software window and you still have pressed power ON boutton until soft terminat all jobs you will see your phone powered ON , and it is alive again.
mình mới test ok