Xperia S USB connectivity Problems after latest software update

[Tommy83]

I wanted to transfer some mp3 files to my My Xperia S via USB. However after the software update PC companion can't connect to my phone. When trying to detect the phone it says installing Phone but after 2 seconds i get the message PC companion is unable to connect to the phone.

Also my computer says it detects an USB-device but cannot recognize it.

So now i cannot transfer files or make a backup.
Is this due to the update and can i do something to make this work?

Before the update everything was working fine.

PC is Windows Vista.
Phone is Xperia S
Android 4.1.2
Build 6.2.B.1.96

PC companion is the latest version.

Thanks,

Tom

EDIT: Just tried on a Windows 7 PC but has the same issue.

[Uliwooly]

Uninstall PCC > reinstall PCC, install JAVA 

http://www.java.com/en/download/index.jsp

restart your PC > connect your phone 

[Tommy83]

Reinstalled PC Companion, installed latest Java, rebooted the computer but the problem is still there.

Also tried different USB-port and rebooted the phone.

Why you break my phone Sony updates?

[Tommy83]

Maybe its that the 4.1.2 update screwed up my USB drivers on my phone?
And is it possible to reinstall those drivers?

[Uliwooly]

Try a different computer 

[Tommy83]

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@uliwooly wrote:

Try a different computer 

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I tried on 3 computers, Windows Vista and Windows 7.
All have the same problem.

Was looking on the internet for similar problems and solutions.
So i tried different usb debug apps and messed with some of the settings and looked into downloading drivers.
I noticed that my "mtp extention service" was not on.
And stumbled onto an "usb mode switcher"-app that changes usb mode from mtp to mass storage and vice versa.
Didnt seem to work at first but after switching back and forth a few times and rebooting my phone it suddenly connected to my pc again and began installing apropriate drivers onto the pc. I could do everything i could normally do.

After disconnecting the USB cable and reconnecting to check if the problem was solved it didn't recognise my phone again and the problem is still there.

[_alexdon_]

Enable USB debugging mode and connect again.

[Tommy83]

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@alexdon wrote:

Enable USB debugging mode and connect again.

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Yeah already tried all those things..

Will not work..

[_alexdon_]

You could uninstall PCC,reinstall it and reconnect the phone.

[Tommy83]

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@alexdon wrote:

You could uninstall PCC,reinstall it and reconnect the phone.

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Yeah i tried that too.. i tried all the standard things already..

Doesn't help