SM-G991B/DS Exynos 2100 — Android 15 G991BXXSJHZC2 — BFU FFS extraction

[bassel]

Hello, colleagues.

Need information on forensic data extraction from Samsung Galaxy S21 5G.

Device:

• Samsung Galaxy S21 5G SM-G991B/DS
• Exynos 2100
• Android 15
• Build: G991BXXSJHZC2
• Security patch: January 1, 2026
• Bootloader: blocked
• After reboot, the device is in BFU state
• PIN unknown
• USB debugging was not enabled previously.

I'm specifically interested in non-destructive extraction of a Full File System (FFS) without USB debugging enabled.

Does anyone have any real experience with this particular model and firmware?

Interested in support from:

• Cellebrite UFED / Premium
• GrayKey
• Oxygen Forensic Detective
• MSAB XRY
• Magnet

I'm especially curious if anyone has managed to get FFS in BFU state on G991BXXSJHZC2 / January 2026 SPL when the PIN is unknown and the bootloader remains locked.

If you have confirmed practical experience, I would be grateful for information about which tool and which software version were used.

Thanks in advance.