This is a SuperTalent 4GB drive in the micro package.
It is enumerated by the PC and a drive letter is assigned, but it will not format, and I get the message:
"There is no disk, please insert and then try again."
I happen to have an older 2 GB Sony Microvault drive that is a very similar physical form factor.
Formatted the Sony with FAT32, inserted into bike and the code cleared.
I'll send you an email with my address; it would be great if I could get a replacement drive.
Sorry for the trouble.