Galaxy Z Fold7 SM-F9660 BIT 4 – Dead Boot & IMEI Repair

The Galaxy Z Fold7 SM-F9660 BIT 4 repair pack (Firmware F9660ZSU4AYI1, Android 15) is designed for the China/Hong Kong Snapdragon 8 Gen 3 variant of Samsung’s 2024 foldable. With BIT 4 firmware and Android 15 (One UI 7), this package enables GSM repair specialists to fix dead boot issues, perform IMEI repair, restore EFS partitions, remove MDM restrictions, and unlock Chinese carriers (China Mobile, China Unicom, China Telecom) through CPID server integration.

Device & Firmware Information

• Model: Galaxy Z Fold7 SM-F9660 (China/HK Snapdragon 8 Gen 3)

• Firmware Version / PDA: F9660ZSU4AYI1

• CSC: ZSU (China/HK region)

• Bit / SW REV.: BIT 4

• OS / UI: Android 15, One UI 7

• Security Patch Level: September 2024

• Build Date: 2024-09

• Firmware Size: ~10–11 GB

• Firmware Download: https://samfw.com/firmware/SM-F9660/F9660ZSU4AYI1

• Chipset: Qualcomm Snapdragon 8 Gen 3 (4 nm, Chinese edition)

The provided DEBUG_EMERGENCY_DOWNLOAD pack is validated for BIT 4 (F9660ZSU4AYI1) and is the recommended method for safe recovery of bricked or Qualcomm 9008 devices.

Capabilities of the Pack

• ✅ Repair dead boot / Qualcomm 9008 devices

• ✅ Perform IMEI repair and restore full EFS partition

• ✅ Remove MDM / enterprise locks (PayJoy, RentCenter, etc.)

• ✅ Unlock Chinese carriers (China Mobile, Unicom, Telecom) via CPID server

• ✅ Works with Qualcomm tools (QFIL, Hydra, Octoplus, EFT Pro, etc.)

How to Flash DEBUG_EMERGENCY_DOWNLOAD (SM-F9660 BIT 4 – F9660ZSU4AYI1)

1. Install latest Qualcomm HS-USB QDLoader 9008 drivers: https://developer.qualcomm.com

2. Connect device in Qualcomm 9008 (EDL) mode.

   • If not detected, use test points on the Fold7 SM-F9660 board.

3. Launch QFIL or another Qualcomm-supported tool: https://androidmtk.com/download-qualcomm-flash-image-loader-qfil

4. Load the DEBUG_EMERGENCY_DOWNLOAD.mbn/bin file from this pack.

5. Begin flashing → wait for “Download successful” message.

6. Reboot device with Power + Volume Down.

7. If IMEI/network issues persist → flash the EFS_ENG file.

8. For carrier unlock or MDM removal, use https://imeirepairserver.store/services.

Important Notes

• This repair pack is specific to Galaxy Z Fold7 SM-F9660 BIT 4 (Firmware F9660ZSU4AYI1, Android 15).

• Flashing on another model/bit may permanently damage the phone.

• Always back up EFS and user data before repair.

With the F9660ZSU4AYI1 BIT 4 DEBUG_EMERGENCY_DOWNLOAD pack, GSM service centers can safely restore the Galaxy Z Fold7 SM-F9660 running Android 15 / One UI 7, covering dead boot recovery, IMEI/EFS repair, MDM bypass, and Chinese carrier unlocking via https://imeirepairserver.store/services.