ISO Tool v1.83 is released. ISO Tool is a handy homebrew application that lets you manage and backup your UMD's straight from your PSP. ISO Tool completes by Japanese Developer Takka.

ISO Tool v1.83 Changelog:
[BUG] UMD was no longer possible to fix the suction of it became impossible to read iop.prx use, use your own change flash0_w.prx
[NEW] 5.00M33-6 Prometheus3 and add a switching capability
Requirements: PSP-2000or1000/5.00M33-6 to have installed a state Prometheus3
Prometheus3 original installation in the state was unresolved, Prometheus3 when switching to the display of information and change the body 5.00 M33-6p
[ETC] iop.prx removal, flash0_w.prx adding, DATA / cfw_change following changes to the file

Download: ISO Tool v1.83
Source: Here