Basically as i understand the critical blocks are the first 5, PRELOADER and DSP_BL (that's why flash tool has them with red text) and also MBR, EBR1 and UBOOT.
thanks for reviving my phone Mt6582 GTide V1, i had downladed the five blocks, the screen lighted with manufacturer logo.
rather than the led notification point which doesn't respond to any handling.
then tried to install the selected blocks by SPFT, unfotunately didn't succeed.:crying:
but seems fortunate because i can go to the service center that they can recover the phone rather than completely dead phone.
so i can stay finger crossed.:fingers-crossed:
really you are the hero of MT65xx forums.:good: