Sure but you need some tools.
You can unsolder the TSOP and Flash it. There are a few nice programmers out there commercial available.
There is also a interesting project you can build that lets you flash without desoldering.http://warmcat.com/milksop/milksop.html
A modchip install is a lot easier.
I may breakdown one of these days and build the flasher tool. I have been wanting to for a while but not enough time.