How can I update to Android version 2.2?

[tufa74]

How to upgrade Android from 1.6 to 2.2?

[Emir1]

Hey @tufa74,

Wow, it's surprising to see someone asking about Xperia X10 these days. The device is getting a bit old, therefore we do no longer offer updates for this model. 

[Uliwooly]

@tufa74

Don't worry, check this out 

Android 2.3 run really good on my X10

http://talk.sonymobile.com/t5/Software-Updates/Xperia-X10-2-3-3-update-X10a-amp-X10i/td-p/118276