Sunplus Loader All In One [updated] Jun 2026

Watch the loader screen. You should see text indicating a successful handshake (e.g., "MCPU found" or "Connecting...").

Check that you have chosen the correct COM port. If using a USB-to-RS232 adapter, update its drivers. sunplus loader all in one

Choose your specific chip type from the dropdown configuration menu (e.g., DDR2 or DDR3 depending on your 1506G/1507G hardware profile). Step 3: Load the Firmware File Change the application mode option to (or Write ). Click the Open or Browse button within the loader. Watch the loader screen

Ensure the firmware .bin file matches your hardware version exactly. If using a USB-to-RS232 adapter, update its drivers

A full firmware flash through the loader can take 10–15 minutes ; users must ensure power is not interrupted during this time to avoid further damage.

Flashing firmware via serial communication carries inherent risks. Always ensure your desktop or laptop is connected to a reliable power source (such as a UPS) to avoid power disruptions midway through execution. Using the incorrect file or forcing a mismatching chip profile can permanently corrupt the SPI flash memory, requiring physical desoldering and an external hardware programmer (like the CH341A) to fix.