Doing this all on an XP laptop seeing as working with mounted USB to a virtual machine is messy.
What I did was I used the CBM209XUmptoolV1.8.3.2_1122. That cleared that chip (that was originally identified as a CD-ROM). In windows, that chip was H:\ and the 2GB was K:\. H:\ (which was ROM before) is now open and I can do whatever I want to it (it's only 240MB though), and I can no longer mount K:\ from the pendrive, where I have the 2GB. I then tried using MFPT, however I don't think I managed to get anywhere using MFPT seeing as I couldn't "see" the pendrive mounted in the MFPT utility. Is there a screenshot tutorial floating around for MFPT?
Anyway, from ChipGenius.exe:
Looks like I've got a CBM2091. Going by the VID/PID, there are a number of utilities...I tried a good number of UMPTools and the only one I got working was the CBM209XUmptoolV1.8.3.2_1122 I tried in the first place. I even tried CBM2090E2091 Umptool V1.9.5 (which I thought would be a good call) though even that one crashed.
Maybe I would need some good instructions on getting the MFPT to work with my pendrive...not sure how it works; I have no visible indication that the pendrive is recognized.
...
Oh since I ran that CBM209XUmptoolV1.8.3.2_1122 again the device is now set as removable media, so at least I can boot the UBCD from it (not too much I can do with less than 240MB).