After installing arabic input software, can't boot phone!

[haus]

You might be running into one of a few potential issues. First, the Intrepid is WM6.5...unlikely to cause problems (over WM6.1) but you never know. Second, the phone has a hardware keyboard that is always available (as opposed to Touch Pro/TP2 with slider keyboard), which I suspect might be causing issues considering you're installing input drivers. Third...well, it's the Intrepid and there are some quirky things about this phone as we all know.

I assume you tried installing one or both of those programs after a fresh hard reset (since you had to do it anyway) just to be sure there wasn't a conflict with something else you had installed before. Otherwise, maybe write the developers and ask them if they support 6.5 and specifically the Intrepid.