Help XPERIA10 S0-1B Update Error in PC COmpanion

Hello Guys,

I have an XPERIA 10 S0-1B which i brought from Japan to Philippines. in 2010 i was able to unlock it. last week(April 2012)i decided to update it using the PC Companion and SEUS however, on the last part of the update it returned an Error and now its in the Download mode( Phone with Triangular Exclamation).

Im still trying to reupdate it again and again but the same thing happens. I brought to repair shop (not SE shop) they told me that they will JTAG it?

Does anyone out there have a step by step solution to repair my phone?

Thank you very much