failed to update

[Mr525]

My phone not update over wifi. Here is problem. It could download 100% error in install. There message appears "could not install".

[Uliwooly]

Are you trying to update the phone or an app?

[Mr525]

Trying to update my phone

[Uliwooly]

That's rather odd, you might want to use PCC

PC Companion (PCC)

Bridge (for Mac)

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355

[Mr525]

I have another problem in my smart phone.. There is message always appear in my cell phone screen "aceess code change". What does it means?

[Uliwooly]

Access code change? could you poste a screenshot? it could be a network alert. 

[Mr525 · Accepted solution]

Sorry the message appears at my phone is not "aceess code change". That is "restricted access changed" what is does it means?

[Uliwooly]

Do you have an antivirus app? that could be the issue. 

[Mr525]

That message appears from first day when i first switch on my mobile...

[Uliwooly]

Again that's probably your SIM card or something else, it will be helpful if you take a screenshot and post it here, but you could just repair your phone with PCC and check again