Hello Turulbird,
Some time ago I added the ufsinstaller for the UFS910, deriving it from the UFS922. As with the UFS922, the ufsinstaller assumes the image is running off the internal hard disk. As the UFS910 has not got one as standard, the best way is to build and USB image and use that in the classic way with the maxi-uboot you already have on your box.
Adding an internal hard disk to the UFS910 is not difficult. You have to solder in 4 10nF SMD capacitors and the SATA data connector. If you use a 2.5 inch hard drive, you only need +5 Volt and the power supply in the UFS910 has enough power to operate such a drive.
If an internal hard drive is installed, use the directions regarding the UFS922 and build a flash image. I have running E2 successfully on both 14W and 1W standby models.
Regards,
Audioniek.