ISO Tool v1.975 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 v1.975 Changelog:
[BUG] (fake_np conversion) of the original ISO file Fixed: Failed to get to the size
[BUG] (fake_np conversion) of the source file and target file Fixed ISO to freeze the size difference and are too
[NEW] (fake_np transformation) since it appears that the dummy block is one problem, several modified to make
[NEW] (fake_np conversion) fake_np re-added to the menu for the data conversion
. / Data / fake_np / folder will be created below UMD titles
[NEW] (fake_np conversion) fake_np Deha Ku NP.PBP conversion, modified to use data created in the menu above.
Changed as the original data folder you specify during conversion

Download: ISO Tool v1.975
Source: Here