When something broke up. »

Dammit you guys :/ You could have warned me that upgrading firmware can brick my phone! I have no idea what to do now, it turns on, blinks and turns off immediately. I have tried removing the battery, flashing again as described in my CANON Service manual, restoring factory settings. Mobile seems pretty messed up now. For those fresh with my case let me remember you what steps I have made so far.
It all started when I tried to upgrade firmware using service packages (recipe from my EPSON Service manual, so: removing battery, reconnecting,loading Phoenix (from PhoenixSlayer), selecting NO CONNECTION, then flashing prommer, choosing software. In the middle of service procedure – bam – phone reboots and turns off immediately.
I then tried to proceed with flashing as described in service manual – I turned off the phone again, disconnected battery, and upgraded in N/C mode this time with Refubrish rather than Restore User Product… it seemed like it was kind of working – the phone booted up nicely… but it took about a minute before it turned off again in the same way. Tried few more times – no luck so far.
I am really pissed right now – I have followed Service Manual exactly and I was sure it won’t let me damage my device… what should I do? Inb4: “read service manual”, “you’re an idiot”, ‘RTFM”. I REALLY TRIED.