The PadFone 2 may have received its Jelly Bean update at the end of last year, but original PadFone owners haven't been so lucky. Fortunately, ASUS has decided to level the playing field again, releasing an update for the original device with Android 4.1.1.

In addition to the OS upgrade, the latest update also provides some improvements to other areas of the phone. Here's the full changelog:

PadFone Firmware: V10.2.1.9 (Android 4.1) improvement:
1. OS upgrade to Android 4.1.1
2. Improve dictionary function
3. Improve Camera preview function
4. Improve Scrapbook function
5. Improve File Manager application
6. Improve Volume Key problem
7. Support SD card NTFS & EX Fat format

There are currently two variations of the update available - WWE (Worldwide) and CHT (China) - but other region specific downloads should be available soon. You can download the update from the ASUS website.

Source: ASUS