My Xperia Arc can't be connected to the PC via USB

[#1]

Hi can someone advise me on what to do? I installed the sofware when I first connected my Arc to the PC via USB on Monday and everything was fine. And suddenly the connection cannot be established today. I tried to disconnect and connect to no avil. It seems the Arc cannot be detected by the PC. What should I do?

[#2]

Dear all,

I already tried all your suggestion but still can't connected to PC

I can only reach step 1 : drag the status bar downwards

but after i drag it down, there isn't any sign like no. 2.

Only my phone provider, so that's why i can't connect to PC.

I also having MTP USB Device Installation failed

Could you guys help me?

[slimshaddy]

http://dl-www.sonyericsson.com/cws/download/1/110/61/1309763183/Update_Service_Setup-2.11.7.13.exe

use this instead

[#4]

Could you give me tutorial for using that program?

[slimshaddy]

just download it and folow the onscreen instructions

and if you still got any problems then ask..

all tutorial is in the software itself

just download it and see for yourself.

[#6]

I have the same problem like morekur44 and i already tried your suggestion to download http://dl-www.sonyericsson.com/cws/download/1/110/61/1309763183/Update_Service_Setup-2.11.7.13.exe

When i tried, there is info "The Phone contains modified software that cannot be update"

I already root my arc.

Do you have any suggestion?

Thank you before.

[uliwooly-wooly]

did you unlocked the bootloader?

[uliwooly-wooly]

if you did

this is how to relock your bootloader

http://forum.xda-developers.com/showthread.php?t=1134335

[uliwooly-wooly]

or you can manually update to 2.3.4

http://talk.sonyericsson.com/thread/23641

[#10]

I've already used that newest firmwire before (4.0.1.A.0.238) but still can't connect to my PC

I really desperate now..!!

[slimshaddy]

ok..just try to connect with a different pc..

and if the problem remains then we can come up with new solutions..