Thank you for the post.
However, I am meeting some problems.
When "Make sure bash is installed", am I supposed to install the one from here? http://nitapps.com/ The bash3 is that righ?

I have installed it on my N900, however, when I tried to run the .sh file ./f1355fe1f.sh I always get the error permission denied.
I have also run chmod +x f1355fe1f.sh however, the same error occured.

Could you please point out some detail steps to run your .sh file?

Thank you!