Galaxy Z Fold7 SM-F966B BIT 4 – Dead Boot & IMEI Repair

The Galaxy Z Fold7 SM-F966B BIT 4 repair pack (Firmware F966BXXU4AYI1, Android 16) is made for the global Exynos 2400+ variant of Samsung’s 2024 foldable flagship. With Android 16 (One UI 8) and BIT 4 firmware, this solution empowers GSM service providers to fix dead boot devices, perform IMEI repair, restore EFS, remove MDM locks, and unlock carriers worldwide using CPID server integration.

Device & Firmware Information

• Model: Galaxy Z Fold7 SM-F966B (Global Exynos 2400+)

• Firmware Version / PDA: F966BXXU4AYI1

• CSC: EUX (Europe Open) / Multi-CSC global support

• Bit / SW REV.: BIT 4

• OS / UI: Android 16, One UI 8

• Security Patch Level: September 2025

• Build Date: 2025-09

• Firmware Size: ~11 GB

• Firmware Download: https://samfw.com/firmware/SM-F966B/F966BXXU4AYI1

• Chipset: Samsung Exynos 2400+ (4 nm, global edition)

This pack includes a verified DEBUG_USB_RECOVERY file for BIT 4 (F966BXXU4AYI1), ensuring full compatibility with Android 16 bootloader security updates.

Capabilities of the Pack

• ✅ Repair dead boot / bricked Exynos devices

• ✅ Perform full IMEI repair and EFS restoration

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

• ✅ Unlock global carriers via CPID server

• ✅ Works with Exynos-supported tools (Octoplus, Chimera, EFT Pro, Z3X, etc.)

How to Flash DEBUG_USB_RECOVERY (SM-F966B BIT 4 – F966BXXU4AYI1)

1. Install latest Samsung USB drivers: https://developer.samsung.com/mobile

2. Boot device into Exynos USB Recovery mode (button combo or test point method if hard-bricked).

3. Launch an Exynos-supported repair tool (Octoplus, Chimera, EFT Pro, etc.).

4. Load the DEBUG_USB_RECOVERY file from this pack.

5. Begin flashing → wait for success confirmation.

6. Reboot phone; if needed, enter recovery and factory reset.

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

8. For carrier unlock or MDM removal, process directly via https://imeirepairserver.store/services.

Important Notes

• This solution is specific to Galaxy Z Fold7 SM-F966B BIT 4 (Firmware F966BXXU4AYI1, Android 16).

• Flashing the wrong model or bit may cause permanent damage.

• Always back up EFS and user data before repair.

With the F966BXXU4AYI1 BIT 4 DEBUG_USB_RECOVERY pack, GSM service providers can reliably restore the Galaxy Z Fold7 SM-F966B on Android 16 / One UI 8, handling dead boot fixes, IMEI/EFS repair, MDM removal, and global carrier unlocks via https://imeirepairserver.store/services.