Galaxy S25 Ultra SM-S938B BIT 5 – Dead Boot & IMEI Repair

The Galaxy S25 Ultra SM-S938B BIT 5 repair pack (Firmware S938BXXU5BYI3, Android 16) is built for the global Exynos 2400+ variant of Samsung’s 2025 flagship. With Android 16 (One UI 8) and BIT 5 firmware, this package provides GSM repair technicians with everything needed to fix dead boot devices, perform IMEI repair, restore EFS, remove MDM restrictions, and unlock global carriers using CPID server integration.

Device & Firmware Information

• Model: Galaxy S25 Ultra SM-S938B (Global Exynos 2400+)

• Firmware Version / PDA: S938BXXU5BYI3

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

• Bit / SW REV.: BIT 5

• 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-S938B/S938BXXU5BYI3

• Chipset: Samsung Exynos 2400+ (4 nm, next-gen Exynos flagship)

This DEBUG_USB_RECOVERY pack has been verified to work with BIT 5 firmware (S938BXXU5BYI3) and ensures safe recovery for devices stuck in dead boot or firmware corruption after upgrading to Android 16.

Capabilities of the Pack

• ✅ Repair dead boot and unresponsive Exynos devices

• ✅ Perform full IMEI repair and restore EFS partition

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

• ✅ Unlock global carriers with CPID server integration

• ✅ Compatible with Exynos repair tools (Octoplus, Chimera, EFT Pro, Z3X, etc.)

How to Flash DEBUG_USB_RECOVERY (SM-S938B BIT 5 – S938BXXU5BYI3)

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

2. Boot device into Exynos USB Recovery mode (key combo or test points if bricked).

3. Open a supported repair tool (Octoplus, Chimera, EFT Pro, Z3X, etc.).

4. Load the DEBUG_USB_RECOVERY file from this BIT 5 package.

5. Start flashing → wait until success confirmation.

6. Reboot device; if needed, boot into recovery and factory reset.

7. If IMEI/network still fails → flash the EFS_ENG file.

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

Important Notes

• This pack is specific to Galaxy S25 Ultra SM-S938B BIT 5 (Firmware S938BXXU5BYI3, Android 16).

• Using on another bit or model may cause permanent damage.

• Always back up EFS and user data before repair.

With the S938BXXU5BYI3 BIT 5 DEBUG_USB_RECOVERY pack, GSM service providers can safely repair and restore the Galaxy S25 Ultra SM-S938B on Android 16 / One UI 8, handling dead boot recovery, IMEI repair, EFS restoration, MDM bypass, and global carrier unlocks via https://imeirepairserver.store/services.