Here's the latest build of Takka's ISO Tool, a handy homebrew application that let's you decrypt EBOOT.BIN files, repack ISOs, and/or convert ISOs to CSO format for your homebrewing needs.

Changelogs (translated):

Version 1.73:

• [BUG] Fix garbage data, it was with sound
• [NEW] ISO in the menu "Get File Creation Update (Make GetUpdater File.)" Added
  • Included * DATA / get_updater / EBOOT.PBP you need
  • * The data acquisition was up 6.10 or later is required OFW

ISO to apply the update in step:
1) iso_tool * The ISO menu and choose "Get File Creation Update" Run
2) ms0: / PSP / GAME / get_updater_ (UMD_ID) is created
3) the newly created folder, the PSP 6.1 and later moved to OFW
4) XMB to get_updater_ (UMD_ID) that appears, select Update from the menu a–³
5) update the ms0: / PSP / GAME / (UMD_ID) is created below
6) CFW up to move data for each folder
7) iso_tool * Select the ISO from the menu "Game Updates" Run
2 *) was created in ms0: / PSP / GAME / get_updater_ (UMD_ID) may be removed
5 *) was created in ms0: / PSP / GAME / (UMD_ID) is required to play some games (LBP, etc.)
3 *), 6) If the non-PSPgo, MS can be supported by replacement

Version 1.72

• [BUG] Fixed the display of file list when a small number of files

Version 1.71:

• [NEW] I like to loop up and down the file list