I made a disk image backup for model 5 with a '6G' SOC. It is a pure raw disk image and you can download, uncompress and then write it to BeadaPanel internal eMMC by a Win32 Disk Imager tool.
https://drive.google.com/drive/folders/1RtiYVAkGcELBKiPuBfvxqO-zs8FqYQS7?usp=sharing