my z550 is dead!PLEASE HELP ME!

3 days ago i thought to change the menu of my z550.I've done something wrong and now,when i open my phone,it shows the sony ericsson's sympol as usual and then it shows me a black screen and a window that says please wait and it stops about at the middle.Then the phone doesn't work at all and i take off the battery to turn it off.I make a check with Setool2life and it gave me this:

welcome to setool2 lite edition v 1.07
supported DB2010/DB2012 CID49/50/51, DB2020 CID49/51/52
Loaded 51 flash descriptors
ChipID:8040,EMP protocol:0301
PHONE IS RED RETAIL PRODUCT
FLASH CID detected:49
Speed:921600
Flash ID check:2019
Flash props sent ok
OTP LOCKED:1 CID:49 PAF:1 IMEI:3549xxxxxxxxxx CERT:RED
FLASH CID:49 COLOR:RED

MAPP CXC article: R6CA009 prgCXC1250583_GENERIC_ML
MAPP CXC version: R6CA009
Language Package:CENT_EUROPE
CDA article: CDA102577/2
CDA version: R2A
Default article: cxc1250506
Default version: R6BA034

Operator: 000-00

USERCODE:0000

Elapsed:7 secs.

Can anyone understand what's wrong?
PLEASE HELP ME!
Sorry for the bad English!

Hi this forum is supported by spanish, which is below the english yew,
there you can help. Greetings

TOP SONY FORUM

thy his forum his spanish then you can siport this english Top Sony bery bery...