This post was VERY helpful; thanks a ton.
One small point that maybe will save others a few minutes:

In step one where the author writes "I saved this file as Filez.sh"

Note that you need to save the file in the root (directly under NOKIA) of file manager. If you try to save it in the "Documents" folder, this will not work (i.e. you will get a 'file not found' error in step 2 when trying to do the "chmod +x Filez.sh")

Cheers