You can locate shared dumps on expert electronics databases:
Place the chip in your programmer. Open your flashing software, auto-detect the chip, and click Read . Immediately save this original dump as a backup just in case. Download SIS231 PT851 RUBIN 40D5FT2C Dump rar
Programmer software (e.g., NeoProgrammer, AsProgrammer, or the official RT809 software). You can locate shared dumps on expert electronics
Search for the chassis number on Elektrotanya , which hosts verified .7z and .rar EEPROM dumps for this specific board. auto-detect the chip