[XPERIA X10 Q&A, Help & Troubleshooting] padevoto:
Hi, I'm writing from Argentina, I read the post to install ICs in my X10A, install X10_2.2.25_MIUIV4-MILAD407-FXP129.ftf and then not boot the phone anymore, it stays on the screen "sony ericsson"

superuser had installed and installed debug options

Can you help me please?, try to flash it but it did not work with older firmwares newer, other files ftf with Flashtool.

The problem begans after try to install this firmware: http://xdaforums.com/showthread.php?t=1792045&page=6

While booting x10 flash mode FlashTool recognizes the phone, but when trying to flash it gives multiple errors

flashsystem.X10FlashException: ERR_SEVERITY="MAJOR";ERR_CLASS="SECURITY_CLASS";ERR_DYNAMIC="SIN header verification failed"

at flashsystem.X10flash.uploadImage(X10flash.java:225)

at flashsystem.X10flash.sendLoader(X10flash.java:233)

at flashsystem.X10flash.flashDevice(X10flash.java:344)

at gui.FlasherGUI$45.run(FlasherGUI.java:1092)

at foxtrot.AbstractWorkerThread$1.run(AbstractWorkerThread.java:40)

at java.security.AccessController.doPrivileged(Native Method)

at foxtrot.AbstractWorkerThread.runTask(AbstractWorkerThread.java:36)

at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:199)

at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:182)

at java.lang.Thread.run(Unknown Source)

java.io.IOException: Read error :31 : Uno de los dispositivos conectados al sistema no funciona.

at win32lib.JKernel32.readBytes(JKernel32.java:57)

at flashsystem.io.USBFlashWin32.windowsReadS1Reply(USBFlashWin32.java:51)

at flashsystem.io.USBFlash.readS1Reply(USBFlash.java:45)

at flashsystem.X10flash.openDevice(X10flash.java:432)

at flashsystem.X10flash.openDevice(X10flash.java:372)

at gui.FlasherGUI$45.run(FlasherGUI.java:1091)

at foxtrot.AbstractWorkerThread$1.run(AbstractWorkerThread.java:40)

at java.security.AccessController.doPrivileged(Native Method)

at foxtrot.AbstractWorkerThread.runTask(AbstractWorkerThread.java:36)

at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:199)

at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:182)

at java.lang.Thread.run(Unknown Source)

java.lang.NullPointerException

at flashsystem.X10flash.processHeader(X10flash.java:187)

at flashsystem.X10flash.uploadImage(X10flash.java:203)

at flashsystem.X10flash.sendLoader(X10flash.java:233)

at flashsystem.X10flash.flashDevice(X10flash.java:344)

at gui.FlasherGUI$45.run(FlasherGUI.java:1092)

at foxtrot.AbstractWorkerThread$1.run(AbstractWorkerThread.java:40)

at java.security.AccessController.doPrivileged(Native Method)

at foxtrot.AbstractWorkerThread.runTask(AbstractWorkerThread.java:36)

at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:199)

at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:182)

at java.lang.Thread.run(Unknown Source)

flashsystem.X10FlashException

at flashsystem.X10flash.uploadImage(X10flash.java:225)

at flashsystem.X10flash.sendLoader(X10flash.java:233)

at flashsystem.X10flash.flashDevice(X10flash.java:344)

at gui.FlasherGUI$45.run(FlasherGUI.java:1092)

at foxtrot.AbstractWorkerThread$1.run(AbstractWorkerThread.java:40)

at java.security.AccessController.doPrivileged(Native Method)

at foxtrot.AbstractWorkerThread.runTask(AbstractWorkerThread.java:36)

at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:199)

at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:182)

at java.lang.Thread.run(Unknown Source)