The Russian website maintains one of the most comprehensive collections of USB flash drive repair utilities. The forum has dedicated sections for Ameco/MXTronics/MICOV controllers. Their utility catalog can be accessed at: http://www.flashboot.ru/index.php?name=Files&op=cat&id=14
Once the update is complete, the device will typically reboot itself or indicate it is ready. Power down the device, remove the SD card, and power it back up to test the new firmware. Troubleshooting Failed Firmware Updates
Power the device on; many devices will automatically detect and begin the update.
: Click Refresh or Scan to let the software detect your MXTronics card.
On the support page, look for categories such as:
Replace /dev/sdX with your actual SD card device (check using diskutil list on macOS or lsblk on Linux).
Look for Phison MPALL or the Phison UPTool archive matching your generation.
Use a (most MPTools only run natively on Windows).