There are two primary ways to update or "flash" the SP7731E 1H10 firmware: 1. USB Flash Method (Standard Update) This is the safest method for functional units. : Format a USB drive to FAT32 .
: If the unit doesn't auto-detect the file, place it in a folder path: mntd/media_rww/udisk/update.zip .
: Go to Settings > System > System Upgrade and select the USB source. 2. SP Flash Tool Method (For Bricked Units)