Open your new .bin or .rom file. Click Write (or "Auto" which handles Erasing, Writing, and Verifying in one go).
Before plugging in your device, be aware of the "3.3V vs 5V" issue. Many CH341A boards output 5V logic on data pins, which can fry modern 1.8V or 3.3V BIOS chips. Check your chip's datasheet (e.g., Winbond 25Q128). siberiaprog ch341a full
For Siberiaprog to communicate with the hardware, you need the Parallel-to-USB driver. Connect the CH341A to your USB port. Open your new
Always click Read and then Save before doing anything else. This creates a "dump" of your current firmware. If the new flash fails, this backup is your only lifeline. Many CH341A boards output 5V logic on data
You cannot write new data to a flash chip without erasing it first. Click Erase and wait for the "Success" message.
🚀 Always double-check the "Pin 1" orientation (marked by a small dot on the chip) against the diagram on the CH341A PCB. Reversing it can permanently damage the chip.