Samsung Galaxy Z Flip 5 SM-F731B UFS Dump File (Bit 5 Dead Boot Repair)

What is the Samsung Galaxy Z Flip 5 SM-F731B UFS Dump File?

This listing provides the verified UFS Dump File for the Samsung Galaxy Z Flip 5 (Model: SM-F731B), specifically for devices running Bit 5 (U5) security. Unlike standard firmware, this is a raw backup of the UFS (Universal Flash Storage) partitions, essential for low-level hardware repairs where the device's bootloader or partition table has been completely corrupted.

The Samsung Z Flip 5 uses advanced UFS storage technology, making it sensitive to power failures or bad software updates. This dump file allows professional technicians to reprogram the storage chip directly, restoring the device's ability to boot into Download Mode for final flashing. It is a "must-have" file for mobile repair labs handling high-value foldable devices.

Supported Repair Scenarios

This Bit 5 UFS dump is specifically designed to address the following hardware-level faults:

• Complete Dead Boot: The device consumes low amperage (e.g., 0.08A - 0.15A) and drops to zero, indicating a boot failure.
• 9008 Mode Stuck: The device is stuck in Qualcomm EDL mode (Emergency Download Mode) or Exynos equivalent and will not accept standard USB flashing.
• Corrupted Partition Table: Partition sizing errors or missing boot partitions (LUN0, LUN1, LUN2) causing boot loops.
• UFS Chip Replacement: Configuring a brand new blank UFS chip if the original storage has physically failed.
• Hank on Logo / Restart: Persistent restarting on the "Samsung Galaxy" logo that cannot be fixed with a hard reset or Odin flash.

Compatible Professional Tools

Because this involves direct storage programming, you must use hardware capable of high-speed UFS data transfer. This file is tested with:

EasyJTAG Plus (UFS Socket)

The industry standard for UFS programming. You can write this dump using the EasyJTAG UFS module. Ensure you select the correct LUN configuration before writing to avoid partition resizing errors.

UFI Box (UFS Prog)

UFI's UFS Toolboxes are fully supported. The dump file structure is compatible with UFI's "Write UFS" function. We recommend using the latest UFI software version to ensure proper handling of Samsung's latest security descriptors.

MiPI Tester / Medusa Pro II

Advanced high-speed programmers like Medusa Pro II and MiPI Tester are also fully compatible with this raw binary format.

How to Use This UFS Dump via ISP or Direct

Method 1: Direct Chip Programming (Recommended)
For the most stable write speed, Desolder the UFS chip and place it in a BGA-254 or BGA-297 socket (depending on the specific package). This ensures verified writes and helps check the health (Life Timer) of the chip before programming.

Method 2: ISP (In-System Programming)
If available, you can solder ISP wires (CLK, CMD, D0, VCC, VCCQ, GND) to the motherboard test points. Note: UFS ISP signals are extremely sensitive to interference; keep wires under 3cm length.

Important Technical Notes

• Binary Matching: Ensure your device was previously on Bit 5 (U5) or lower. Writing this Bit 5 dump to a device with higher binary security (e.g., Bit 6) is safe, but you cannot downgrade a Bit 6 device to Bit 4 using this method.
• RPMB Data: This dump does NOT contain the encrypted RPMB (Replay Protected Memory Block) section, as it is unique to each CPU. After writing this dump, the device will boot, but you may need to patch certificates if network issues arise.
• Post-Dump Flashing: After successfully writing this dump, the phone should enter Download Mode. You MUST then flash the full 4-file stock firmware (BL, AP, CP, CSC) to complete the repair.

Related Repair Resources

Maximize your repair success rate by checking our other verified database resources:

• Official Samsung Firmware Collection - Download the full 4-file firmware to flash after restoring this dump.
• eMMC & UFS Dump File Archive - Browse dumps for other Samsung models.
• Latest UFS ISP Pinout Guides - Learn about UFS pinout procedures for new flagship models.
• General ISP Pinout Library - Direct pinouts for various motherboard layouts.
• Samsung Dead Boot Repair Examples - Case studies and files for similar repairs.

Disclaimer

For Professional Repair Use Only: This file is intended for certified mobile technicians. Board-level repair carries risks of permanent damage if performed incorrectly. MobiFirms is not responsible for any damage caused by the misuse of these files or tools.