I searched, read a lot of posts about multiboot and Nitdroid but i am still a bit confused.

Is it safe to just upgrade multiboot 0.2.5 to 0.2.10-1 via application manager ?

or

is it necessary to use the NITDroid 0.0.7 And Auto Installer.

I have a working multiboot 0.2.5 and i can boot maemo, nitdroid-kernel-2.6.28-05 / NITDroid-N900-the-flying-world and kernel-power39.

Thanks for your help

Edit:
Upgraded from v0.2.5 to 0.2.10-1 with application manager without problems.
Note that just after upgrading the desktop became unresponsive. Rebooting solved the problem.
The only problem still remaining from version 0.2.5 is the start a shell option. I can't make it work.

Thumbs up to Jay-C and multiboot team.

Thanks