Try removing the battery, re-inserting it, and then performing the boot key sequence.
. You should see "SPRD U2S Diagnostic" or "SPD Port" under Ports (COM & LPT). If it says "Unknown Device," the boot key wasn't held correctly or the cable is bad. 3. Battery Status bootload error id 1
If you have a SPI flash programmer (e.g., CH341A, Raspberry Pi with flashrom), desolder or clip onto the 8-pin SOIC-8 flash chip. Dump its contents. Try removing the battery, re-inserting it, and then
Users who run two operating systems (e.g., Windows and Linux) on the same machine often encounter this. Installing a new OS can overwrite the existing bootloader. If the new bootloader doesn't recognize the old OS correctly, or if the boot order changes in the BIOS, Error ID 1 can manifest. If it says "Unknown Device," the boot key
: Most Spreadtrum devices require holding the Volume Down key while connecting the USB cable. If that doesn't work, try holding Volume Up or both volume keys simultaneously.
Power off and unplug the system. Remove the affected controller card (if removable). Inspect:
If you can share: