Click the (Start Downloading) and reconnect your device in boot mode (usually by holding Volume Down or Volume Up while plugging in the USB cable).
Download and install the latest (often called SCI-USB-Drivers ). 5. Check Hardware Connections Use a high-quality USB cable.
Change the NV handling strategy from "Keep" or "Backup" to or Wipe .
In (often used for Unisoc/Spreadtrum devices), the BKF NV or NV Data Crashed error typically indicates a problem with the Non-Volatile (NV) partitions, which store critical device-specific information like IMEI and network configurations. Common Causes spd flash tool bkf nv error
Use a high-quality USB cable and a USB 2.0 port on your computer.
If you encounter "Failed: NV data read in phone is crashed" or similar BKF NV errors, try these solutions recommended by experts at Hovatek :
Before attempting any of the flashing fixes, ensure you have the correct foundational tools to prevent further corruption: Click the (Start Downloading) and reconnect your device
If you are changing Android versions, the NV structure might change, causing a crash. 3. Clear/Reflash NV Partitions If the NV data is corrupted, forcing a rewrite can fix it.
If you reboot your phone after seeing this error without fixing it, you will likely lose cellular service permanently unless you have a professional JTAG or a full backup.
If you are facing this error during firmware upgrades or downgrades, this guide provides a comprehensive overview of causes and tested solutions to fix your device. What is the SPD Flash Tool BKF NV Error? Check Hardware Connections Use a high-quality USB cable
Open your (ResearchDownload or UpgradeDownload).
in this tab (e.g., PhaseCheck, Antenna, Network, etc.). Click OK to save and proceed with flashing. 2. Update the Flashing Tool
