When the "Baseband version" under Settings > About Phone shows "Unknown".
Samsung's security "bit." You can flash a modem with a higher or equal binary number, but you cannot "downgrade" to a lower one (e.g., you cannot flash a U5 modem onto a U6 device). How the Process Works g925f modem file u6
The phone will reboot. You will see a new baseband version in Settings > About Phone > Software Information . If you still have "Unknown Baseband," you have a hardware failure or a corrupt EFS partition. When the "Baseband version" under Settings > About
: Resolve "Searching" or "No Service" errors. You will see a new baseband version in
the binary level; you can only flash a modem file that matches or is higher than your current version Use Cases & Repair
The "U6" designation refers to the of your device's firmware. Samsung security prevents downgrading to a lower binary level. Therefore, if your phone is on Binary 6, you must use a U6-compatible modem file to ensure the hardware communicates correctly with the software. Modem files (CP) are typically used to:
: Repair "Baseband version: Unknown" in settings.