This story is old but I reposted it for people who still need the details.
My Mvix stopped working and I could not access it. When I connected it directly to my PC I could see the device but my HDD would not mount. A portion of the Mvix operating system is stored on the internal drive and the rest in flash memory on the unit.
The initial fix is just for my records, scroll down to The Final Fix for the simplest solution.
The Initial Fix
I started by downloading the MvixBOX 1.1.0 Firmware ISO, this is a CD image that installs from the users PC across the network to the MvixBOX.
You need to have a hard drive in the Mvix as some of the install is to the physical drive. The drive is formatted, the data is then copied across to the drive and then the install takes place on the MvixBOX.
I then patched to version 1.1.1 then 1.1.2 and finally 1.1.3, because these are patch’s they need to be installed sequentially.
After all this I came across a 1.1.3 ISO
The Final Fix
Firmware 1.1.3 ISO Zipped (153MB)
Download the Zipped ISO, unzip to extract the ISO. If you double click in Windows 10 it will mount the ISO or or use a tool like Daemon Tools Lite to mount the ISO to a virtual drive.
Next run Setup.exe from the CD or virtual drive.
Your Serial no. is the same as your CD-key [P2PE7P723CVV] and is on the base of your MvixBOX and is case sensitive.
The standard ID and password is, sysadmin sysadmin
Here is a video clip showing the ISO update procedure.