Sure you can, it makes your new 9700 a whole new phone! Much faster, better battery (in my case), better WiFi connectivity that actually works now! And the best browser ever!
Download the Operating System from the below link:
9700M_PBr6.0.0_rel1308_PL6.6.0.63_A6.0.0.358 - download
Make sure you create a backup before you perform the below!
Instructions For Installation:
1) Install the
*.exe file you just downloaded.
2) Navigate to
Computer >>> C: >>> Program Files >>> Common Files >>> Research in Motion >>> Apploader
3) Delete the file named
vendor.xml
4) Connect your BlackBerry through the USB port
5) Run
loader.exe
6) Follow the on-screen instructions and enjoy.