On 2.1 AOSP want to restore to stock firmware. Getting Error

[anirudha]

I want to give back the phone for warranty purposes. I am following this tutorial :
http://forum.xda-developers.com/showthread.php?t=835308

Getting this error,

Please choose:
1.) 32-Bit Windows XP
2.) 64-Bit Windows XP
3.) 32-Bit Windows Vista/7
4.) 64-Bit Windows Vista/7
Please choose: (1-4): 3
please connect Xperia in flash mode.
Press any key to continue . . .
Dec 22, 2010 7:18:24 PM X10flash main
INFO: start
java.io.IOException: Unable to open channel, GetLastError=0
at com.sonyericsson.cs.usbflashnative.impl.USBFlashNativeImpl.openChanne
l(Native Method)
at X10flash.main(X10flash.java:414)
Exception in thread "main" java.lang.NullPointerException
at java.lang.String.<init>(Unknown Source)
at X10flash.testPluged(X10flash.java:106)
at X10flash.run(X10flash.java:379)
at X10flash.main(X10flash.java:421)
Press any key to continue . . .

[JayJ]

Are you using the dual boot version of AOSP 2.1 or did you use xRecovery?

Posted on my X10i using Tapatalk Pro and Swype Beta

[anirudha]

I used xRecovery on stock firmware. I don't think so dual boot version was available for AOSP 2.1.
Well, I wanted to know can I try repairing with PC Comapanion software.

[JayJ]

Did you make a back up with xRecovery?

And yes you can just flash it with PCC or SEUS.

Posted on my X10i using Tapatalk Pro and Swype Beta