I am sending you a link to my server and a username and password. In the FTP folder will be all the stuff you need including the latest firmware for the MXM354 w/o HDD and instructions. Once you create the SD card you will need to do an emergency update with firmware provided. You may also need to reinstall the emanual or watermark firmware if it applies to that model. if your machine has a hard disk I dont have the sd card image for that one.
The reason it's odd is because the machine has no hard disk so the stuff that would normally be on the HDD are then stored on the larger SD card. That file was created off a factory 8gb card. The reason you use a 8 GB card for the machines that take a 4gb card is because not all 4gb cards are 4008mb. Some are only 3998 or 4001 and they will fail like yours did. The same goes for 8gb cards. Not all are 8008 MB. So the easiest thing to do is buy a 16gb card.
Nearby walmart has 16gb in stock. Shall I do a firmware update AFTER or before replacing the sd card. and is it done by USB thumbdrive. If yes, is there a service usb port different than the customer's usb port? Such as in the back for svc oonly (Konica Minolta does that)