Sometimes ALCATEL Pixi 4+ Power (5023F) mobile gets disconnected midway during flashing and does not reconnect. To solve this problem, DA file alone is not enough, but the compatibility of DA file with tool configuration is very important. The correct DA Auth File not only unlocks secure boot but also completes the dram initialization sequence of the mobile, which helps in completing the flashing..
ALCATEL Pixi 4+ Power (5023F) If the mobile stops at the logo only and recovery is not loading, then it is very possible that vbmeta is corrupted or dm-verity is enabled. In this case, flashing tools only do not allow writing to the vbmeta partition. But if you load the DA Auth File correctly, then the tool is allowed to flash vbmeta even without fastboot or recovery, which brings the mobile out of bootloop.