I'm trying to debrand an Orange Uk k510i to use an italian sim card but I'm always getting this error msg:

17:46:20|

17:46:20| Attempting to open the interface...

17:46:20|

17:46:20| TURN OFF PHONE!

17:46:20| Hold 'C' button on phone and connect phone NOW.

17:46:20| You have 30 seconds...

17:46:20|

17:46:24| Baseband ID: 8040

17:46:24| Protocol Version: 3.1

17:46:24| NEW SECURITY PHONE DETECTED! SWITCHING...

17:46:24| Phone name detected!

17:46:24|

17:46:24| Profiling SEMC phone...

17:46:24| Platform: DB2010

17:46:24| OTP CID: 50

17:46:24| EROM CID: 50

17:46:24| EROM Color: Red

17:46:24| IMEI: 35839701xxxxxx

17:46:24| Phone ID: K510

17:46:24| Region: ORANGE_GEN

17:46:24| CDA: CDA102460/28 R11A

17:46:24| Firmware Version: R4CJ001

17:46:24| EROM: n/a

17:46:24| Ready for operation!

17:46:48| ~~~~~~~~~~ Custpack information ~~~~~~~~~~

17:46:48| Custpack: BALTIC (CDA102460/100) (K510)

17:46:48| Generic(non-branded) custpack: Yes

17:46:48| Allowed languages: en, et, lv, lt, ru,

17:46:48| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

17:46:50| ~~~~~~~~~~ Custpack information ~~~~~~~~~~

17:46:50| Custpack: BALTIC (CDA102460/100) (K510)

17:46:50| Generic(non-branded) custpack: Yes

17:46:50| Allowed languages: en, et, lv, lt, ru,

17:46:50| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

17:46:53| ~~~~~~~~~~ Custpack information ~~~~~~~~~~

17:46:53| Custpack: EUROPE_5 (CDA102460/33) (K510)

17:46:53| Generic(non-branded) custpack: Yes

17:46:53| Allowed languages: en, fr, de, it,

17:46:53| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

17:46:55|

17:46:55| Sending db2010_db2012_cid50red_flash_r1a002.bin...

17:46:55| Applet ID: 060712 1520 HAN_DB2012_FLASHLOADER_R1A002_CXC1250695

17:46:55| This is a FLASH loader

17:46:55| Now flashing firmware main...

17:46:55| Flashing c:\documents and settings\unnamed\desktop\k510_r4cj001_main_generic _co_red50\k510_r4cj001_main_generic_co_red50.mbn

17:46:55| Header type: BABE

17:46:56| 324 flashblocks

17:46:57| Binary acknowledge failed with: 15

17:46:57| Command: Error 0x15

17:46:57| Failed sending flashblock 1. Returnvalue 0xFFFF250B

17:46:57| Finishing flash

17:47:11| Sendinging shutdown signal to phone...

What am I doing wrong? I'm stuck