Firmware upgrade DM 42

[Graan]

Hello
First: I know there is a SwissMicro forum but unfortunately i lost my pwd and have not received a reply from SM to reset my pwd yet.
I have a DM42 s/n 191 firmware: V 3.0. Have nort used it much but was thinking to upgrade the firmware. Tried to follow the instruction for upgrade the firmware. Found that since I use an old version I have to save 2 files to the storage of the calculator. According insttructions I have to save the files to the root. Then "safely remove hardware" on the PC. Then the calculator should detect the 2 files and upgrade. My result is that nothing happens.
Eject (safely remove) the calculator disk from PC/Mac computer. Please, be patient this can take some time. Don’t unplug USB cable until safely ejected from OS.

Calculator detects presence of new firmware file and asks for update. You can confirm it immediately or press EXIT key and activate flashing process later using "Flash firmware from FAT" either from DM42 program SETUP → System or directly from DMCP System menu Enter System Menu
Maybe I have to do it in another way since my current firmware is to old?