On my Ultimate II+ the Ocean version works Flawlessly. The EasyFlash 3 version however hangs when I exit the Options Menu, and starts working again after I get in and out the UII+ menu.
Hope I'm not doing anything wrong, but the Ocean version is flawless :)
You need to report this to Gideon. His latest version of the firmware on both U1541 and U64 seems to have broken the eAPI support for EasyFlash. Exiting the options screen is trying to save back to the cartridge: The following eAPI calls are used:
jsr EAPIERASESECTOR
jsr EAPISETPTR
jsr EAPIWRITEFLASHINC