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| Error | Solution | | :--- | :--- | | | Reinstall Unisoc drivers. Disable Windows Driver Signature Enforcement. | | "PAC file mismatch" | You downloaded firmware for the wrong variant (C20 vs C20 Plus). Double-check model TA-1352, TA-1375, etc. | | "S_DL_GET_DRAM_SETTING_FAIL" | Your phone is in the wrong mode. Force shut down (hold power 15s) and try the Volume button combo again. | | Tool gets stuck at 9% | Bad USB cable or USB port. Switch to a USB 2.0 port on your motherboard. |
Your PC will not recognize the Nokia C20 in flash mode without the correct drivers.
| Error | Solution | | :--- | :--- | | | Reinstall Unisoc drivers. Disable Windows Driver Signature Enforcement. | | "PAC file mismatch" | You downloaded firmware for the wrong variant (C20 vs C20 Plus). Double-check model TA-1352, TA-1375, etc. | | "S_DL_GET_DRAM_SETTING_FAIL" | Your phone is in the wrong mode. Force shut down (hold power 15s) and try the Volume button combo again. | | Tool gets stuck at 9% | Bad USB cable or USB port. Switch to a USB 2.0 port on your motherboard. |
Your PC will not recognize the Nokia C20 in flash mode without the correct drivers.
