The firmware file you tried to flash is for a different hardware revision (e.g., TS1012 Pro vs. TS1012 Lite). Check the label on your device for the exact model number.

Based on your request, here is the information regarding the firmware for the (commonly referring to the popular Pine64 Pinecil V2 or the Miniware TS101 soldering iron).

The community-driven "IronOS" firmware as a benchmark for open-source hardware.