The folks at XDA developers were able to extract the Dropbox APK from the HTC One X and modify it to work on any Android device. As we already know, the HTC One X comes with 25 GB of free space for two years, which equates to 23 GB more than everyone else (standard is 2GB for free). By installing this modified APK on your device, you will instantly have access to the same additional 23GB for two years.
Hit the break for the download link and intructions

1. If you already have Dropbox installed on your Android device, you must Clear data, Force close and finally uninstall it from Settings > Applications > Manage Applications > Dropbox.
   
2. Download and install the Dropbox+23GB APK Be sure to enable Unknown sources under Settings > Applications or Settings > Security (on ICS) before installing the APK!
   
3. Launch the app as usual and log in.
   
4. Wait for the confirmation email.
   
5. The confirmation email can take up to 30 mins

Download APK


source: xda

Thanks a lot

Its not working on all devices.

Originally Posted by marcius8LL

Its not working on all devices.

Yap, just on some HTC ones.
It worked when I first tried, but dropbox caught us and removed the 23gb.