SAMSUNG A042F U8 DUMP EASY JTAG TO REPAIR YOUR PHONE OR UNBRICK YOUR PHONE.
1. 4X62MB_329990AF_20250602_035057.extcsd
Type: Extended CSD Register Dump
Size: ~62MB (x4 blocks)
Purpose:
Contains the extended CSD (Card-Specific Data) of the eMMC storage.
Used to identify storage configuration, features, manufacturer info, and health status.
Often used in low-level flashing or repair tools to reinitialize or restore the eMMC.
2. ROM1_000000000000_000040000000.bin
Size: 1 GB (0x40000000 bytes)
Type: eMMC ROM1 region (Main User Area)
Purpose:
This is the primary storage partition of the device.
Contains the Android OS, bootloader, kernel, recovery, system, vendor, and userdata.
Critical for device functionality; corruption can result in a non-booting phone.
3. ROM2_000000000000_000000400000.bin
Size: 4 MB (0x400000 bytes)
Type: eMMC ROM2 region (Boot Partition 1)
Purpose:
Stores the primary bootloader or SBL (Secondary Bootloader).
Vital for booting the device.
ROM2 is typically the first place the hardware accesses on power-up.
4. ROM3_000000000000_000000400000.bin
Size: 4 MB (0x400000 bytes)
Type: eMMC ROM3 region (Boot Partition 2)
Purpose:
Usually holds backup or alternative bootloader data.
May also contain secure boot information depending on device configuration.
Used as a fallback if ROM2 is corrupted.
General Notes:
These files are commonly used in eMMC/UFS repair, forensics, or JTAG ISP operations.
Handling these dumps requires tools like EasyJTAG, UFI Box, or Medusa Pro.
Improper flashing of ROM1/2/3 may lead to permanent boot issues or eMMC corruption.
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