This is the error i got when i tried to flash 2. times. Phone is working without problem.

phone language is still English. Model name is also still K750

Code:
23:45:14| XS++ v3.1 (Darwin) Ready !

23:45:14| Executed on Microsoft Windows XP

23:46:33| Shutting down...

23:46:38| XS++ v3.1 (Darwin) Ready !

23:46:38| Executed on Microsoft Windows XP

23:53:18| XS++ v3.1 (Darwin) Ready !

23:53:18| Executed on Microsoft Windows XP

23:54:26| 

23:54:26| Attempting to open the interface...

23:54:26| 

23:54:26| TURN OFF PHONE!

23:54:26| Hold 'C' button on phone and connect phone NOW.

23:54:26| You have 30 seconds...

23:54:26| 

23:54:31| Baseband ID: 8040

23:54:31| Protocol Version: 3.1

23:54:31| 

23:54:31| Sending db2010_cid00_prodid_p3l.bin...

23:54:31| Applet ID: 061113 1250 ALUCXC125872_COMPACTPRODUCTION_ID_LOADER P3L

23:54:31| This is a PRODUCTION_ID loader

23:54:31| Activating GDFS...

23:54:31| Phone name detected!

23:54:31| 

23:54:31| Profiling SEMC phone...

23:54:31| Platform: DB2010

23:54:31| OTP CID: 49

23:54:31| EROM CID: 49

23:54:31| EROM Color: Red

23:54:31| IMEI: 35967200xxxxxx

23:54:31| Phone ID: K750

23:54:31| Region: EMEA_7

23:54:31| CDA: CDA102338/87   R1A

23:54:31| Firmware Version: R1CA021

23:54:31| EROM: n/a

23:54:31| Ready for operation!

23:55:33| 

23:55:33| Sending db2010_cid49red_flash_r2b.bin...

23:55:34| Applet ID: 051207 0928 NPACXC1250165_1_SEMC_COMPACTFLASHLOADER R2B

23:55:34| This is a FLASH loader

23:55:34| Now flashing firmware main...

23:55:34| Flashing d:\telefon update\w800_r1bc002_main_eu_1_ca_red49.mbn

23:55:34| Header type: BABE

23:55:34| 291 flashblocks

23:59:52| Binary acknowledge failed with: 15

23:59:52| Command: Error 0x15

23:59:52| Failed sending flashblock 291. Returnvalue 0x0

23:59:52| Finishing flash

00:03:22| Error: Flashing failed

00:03:22| Disconnected... Unplug the phone

00:03:42| 

00:03:42| Attempting to open the interface...

00:03:42| 

00:03:42| TURN OFF PHONE!

00:03:42| Hold 'C' button on phone and connect phone NOW.

00:03:42| You have 30 seconds...

00:03:42| 

00:03:47| Baseband ID: 8040

00:03:47| Protocol Version: 3.1

00:03:47| 

00:03:47| Sending db2010_cid00_prodid_p3l.bin...

00:03:47| Applet ID: 061113 1250 ALUCXC125872_COMPACTPRODUCTION_ID_LOADER P3L

00:03:47| This is a PRODUCTION_ID loader

00:03:47| Activating GDFS...

00:03:47| Phone name detected!

00:03:47| 

00:03:47| Profiling SEMC phone...

00:03:47| Platform: DB2010

00:03:47| OTP CID: 49

00:03:47| EROM CID: 49

00:03:47| EROM Color: Red

00:03:47| IMEI: 35967200xxxxxx

00:03:47| Phone ID: K750

00:03:47| Region: EMEA_7

00:03:47| CDA: CDA102338/87   R1A

00:03:47| Firmware Version: R1CA021

00:03:47| EROM: n/a

00:03:47| Ready for operation!

00:03:52| ~~~~~~~~~~ Custpack information ~~~~~~~~~~

00:03:52| Custpack: APAC_1 (CDA102337/101) (K750)

00:03:52| Generic(non-branded) custpack: Yes

00:03:52| Allowed languages: en, id, ms, tl, vi, zs, 

00:03:52| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

00:04:05| ~~~~~~~~~~ Custpack information ~~~~~~~~~~

00:04:05| Custpack: HONG_KONG (CDA102425/15) (W800)

00:04:05| Generic(non-branded) custpack: No

00:04:05| Allowed languages: en, zh, 

00:04:05| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

00:04:22| ~~~~~~~~~~ Custpack information ~~~~~~~~~~

00:04:22| Custpack: EUROPE_2 (CDA102430/10) (W800)

00:04:22| Generic(non-branded) custpack: Yes

00:04:22| Allowed languages: en, fr, de, st, zu, tr, 

00:04:22| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

00:04:53| ~~~~~~~~~~ Custpack information ~~~~~~~~~~

00:04:53| Custpack: EUROPE_2 (CDA102425/40) (W800)

00:04:53| Generic(non-branded) custpack: No

00:04:53| Allowed languages: en, fr, de, tr, st, zu, 

00:04:53| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

00:05:06| ~~~~~~~~~~ Custpack information ~~~~~~~~~~

00:05:06| Custpack: EUROPE_2 (CDA102430/10) (W800)

00:05:06| Generic(non-branded) custpack: Yes

00:05:06| Allowed languages: en, fr, de, st, zu, tr, 

00:05:06| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

00:05:10| 

00:05:10| Sending db2010_cid49red_cs_p3t.bin...

00:05:12| Applet ID: 070417 1739 NPACXC1327364_COMPACT_SEMC_CS_LOADER__P3T

00:05:12| This is a CHIPSELECT loader

00:05:12| Activating loader...

00:05:12| Activating GDFS...

00:05:13| This loader is UNLOCKED

00:05:13| Success! CS-loader has been unlocked!

00:05:13| Uploading customization files to phone...

00:05:13| Uploading /tpa/preset/custom/C3_PCA_G3v2.cer...

00:05:13| Activating filesystem

00:05:58| Creating directory /tpa

00:05:58| Creating directory /tpa/preset

00:05:58| Creating directory /tpa/preset/custom

00:05:58| Deleting file /tpa/preset/custom/C3_PCA_G3v2.cer

00:05:58| Deleted...OK!

00:05:58| Uploading file /tpa/preset/custom/C3_PCA_G3v2.cer

00:05:58| Done uploading

00:05:58| Uploading /tpa/preset/custom/Entrust.net Root Certificate.cer...

00:05:58| Creating directory /tpa

00:05:58| Creating directory /tpa/preset

00:05:58| Creating directory /tpa/preset/custom

00:05:58| Deleting file /tpa/preset/custom/Entrust.net Root Certificate.cer

00:05:58| Deleted...OK!

00:05:58| Uploading file /tpa/preset/custom/Entrust.net Root Certificate.cer

00:05:58| Done uploading

00:05:58| Uploading /tpa/preset/custom/Entrust.net_WTLS_Root_Certificate.wcrt...

00:05:58| Creating directory /tpa

00:05:58| Creating directory /tpa/preset

00:05:59| Creating directory /tpa/preset/custom

00:05:59| Deleting file /tpa/preset/custom/Entrust.net_WTLS_Root_Certificate.wcrt

00:05:59| Deleted...OK!

00:05:59| Uploading file /tpa/preset/custom/Entrust.net_WTLS_Root_Certificate.wcrt

00:05:59| Done uploading

00:05:59| Uploading /tpa/preset/custom/GTE_CyberTrust_Root.cer...

00:05:59| Creating directory /tpa

00:05:59| Creating directory /tpa/preset

00:05:59| Creating directory /tpa/preset/custom

00:05:59| Deleting file /tpa/preset/custom/GTE_CyberTrust_Root.cer

00:05:59| Deleted...OK!

00:05:59| Uploading file /tpa/preset/custom/GTE_CyberTrust_Root.cer

00:05:59| Done uploading

00:05:59| Uploading /tpa/preset/custom/GTE_Cybe_Trust_Root_WTLS.wcrt...

00:05:59| Creating directory /tpa

00:05:59| Creating directory /tpa/preset

00:05:59| Creating directory /tpa/preset/custom

00:05:59| Deleting file /tpa/preset/custom/GTE_Cybe_Trust_Root_WTLS.wcrt

00:05:59| Deleted...OK!

00:05:59| Uploading file /tpa/preset/custom/GTE_Cybe_Trust_Root_WTLS.wcrt

00:05:59| Done uploading

00:05:59| Uploading /tpa/preset/custom/Root.cer...

00:05:59| Creating directory /tpa

00:05:59| Creating directory /tpa/preset

00:05:59| Creating directory /tpa/preset/custom

00:05:59| Deleting file /tpa/preset/custom/Root.cer

00:05:59| Deleted...OK!

00:05:59| Uploading file /tpa/preset/custom/Root.cer

00:05:59| Done uploading

00:05:59| Uploading /tpa/preset/custom/SEMC_E2E_Root_CA.crt...

00:05:59| Creating directory /tpa

00:05:59| Creating directory /tpa/preset

00:05:59| Creating directory /tpa/preset/custom

00:05:59| Deleting file /tpa/preset/custom/SEMC_E2E_Root_CA.crt

00:05:59| Deleted...OK!

00:05:59| Uploading file /tpa/preset/custom/SEMC_E2E_Root_CA.crt

00:05:59| Done uploading

00:05:59| Uploading /tpa/preset/custom/ThawtePremium.der...

00:05:59| Creating directory /tpa

00:05:59| Creating directory /tpa/preset

00:05:59| Creating directory /tpa/preset/custom

00:05:59| Deleting file /tpa/preset/custom/ThawtePremium.der

00:05:59| Deleted...OK!

00:05:59| Uploading file /tpa/preset/custom/ThawtePremium.der

00:05:59| Done uploading

00:05:59| Uploading /tpa/preset/custom/ThawteServerCA.cer...

00:05:59| Creating directory /tpa

00:06:00| Creating directory /tpa/preset

00:06:00| Creating directory /tpa/preset/custom

00:06:00| Deleting file /tpa/preset/custom/ThawteServerCA.cer

00:06:00| Deleted...OK!

00:06:00| Uploading file /tpa/preset/custom/ThawteServerCA.cer

00:06:00| Done uploading

00:06:00| Uploading /tpa/preset/custom/Utiroot.cer...

00:06:00| Creating directory /tpa

00:06:00| Creating directory /tpa/preset

00:06:00| Creating directory /tpa/preset/custom

00:06:00| Deleting file /tpa/preset/custom/Utiroot.cer

00:06:00| Deleted...OK!

00:06:00| Uploading file /tpa/preset/custom/Utiroot.cer

00:06:00| Done uploading

00:06:00| Uploading /tpa/preset/custom/VeriSignClass3Root.cer...

00:06:00| Creating directory /tpa

00:06:00| Creating directory /tpa/preset

00:06:00| Creating directory /tpa/preset/custom

00:06:00| Deleting file /tpa/preset/custom/VeriSignClass3Root.cer

00:06:00| Deleted...OK!

00:06:00| Uploading file /tpa/preset/custom/VeriSignClass3Root.cer

00:06:00| Done uploading

00:06:00| Uploading /tpa/preset/custom/Verisign_Class_3_CA_WTLS.wcrt...

00:06:00| Creating directory /tpa

00:06:00| Creating directory /tpa/preset

00:06:00| Creating directory /tpa/preset/custom

00:06:00| Deleting file /tpa/preset/custom/Verisign_Class_3_CA_WTLS.wcrt

00:06:00| Deleted...OK!

00:06:00| Uploading file /tpa/preset/custom/Verisign_Class_3_CA_WTLS.wcrt

00:06:00| Done uploading

00:06:00| Uploading /tpa/preset/custom/CONTENT_DOWNLOAD_HOOK.itm...

00:06:00| Creating directory /tpa

00:06:00| Creating directory /tpa/preset

00:06:00| Creating directory /tpa/preset/custom

00:06:00| Deleting file /tpa/preset/custom/CONTENT_DOWNLOAD_HOOK.itm

00:06:00| Deleted...OK!

00:06:00| Uploading file /tpa/preset/custom/CONTENT_DOWNLOAD_HOOK.itm

00:06:00| Done uploading

00:06:00| Uploading /tpa/preset/custom/DESKTOP_HOOK_2.itm...

00:06:00| Creating directory /tpa

00:06:00| Creating directory /tpa/preset

00:06:01| Creating directory /tpa/preset/custom

00:06:01| Deleting file /tpa/preset/custom/DESKTOP_HOOK_2.itm

00:06:01| Deleted...OK!

00:06:01| Uploading file /tpa/preset/custom/DESKTOP_HOOK_2.itm

00:06:01| Done uploading

00:06:01| Uploading /tpa/preset/custom/FM_PICTURES_HOOK_1.itm...

00:06:01| Creating directory /tpa

00:06:01| Creating directory /tpa/preset

00:06:01| Creating directory /tpa/preset/custom

00:06:01| Deleting file /tpa/preset/custom/FM_PICTURES_HOOK_1.itm

00:06:01| Deleted...OK!

00:06:01| Uploading file /tpa/preset/custom/FM_PICTURES_HOOK_1.itm

00:06:01| Done uploading

00:06:01| Uploading /tpa/preset/custom/FM_PICTURES_HOOK_3.itm...

00:06:01| Creating directory /tpa

00:06:01| Creating directory /tpa/preset

00:06:01| Creating directory /tpa/preset/custom

00:06:01| Deleting file /tpa/preset/custom/FM_PICTURES_HOOK_3.itm

00:06:01| Deleted...OK!

00:06:01| Uploading file /tpa/preset/custom/FM_PICTURES_HOOK_3.itm

00:06:01| Done uploading

00:06:01| Uploading /tpa/preset/custom/FM_SOUNDS_HOOK_1.itm...

00:06:01| Creating directory /tpa

00:06:01| Creating directory /tpa/preset

00:06:01| Creating directory /tpa/preset/custom

00:06:01| Deleting file /tpa/preset/custom/FM_SOUNDS_HOOK_1.itm

00:06:01| Deleted...OK!

00:06:01| Uploading file /tpa/preset/custom/FM_SOUNDS_HOOK_1.itm

00:06:02| Done uploading

00:06:02| Uploading /tpa/preset/custom/FM_SOUNDS_HOOK_3.itm...

00:06:02| Creating directory /tpa

00:06:02| Creating directory /tpa/preset

00:06:02| Creating directory /tpa/preset/custom

00:06:02| Deleting file /tpa/preset/custom/FM_SOUNDS_HOOK_3.itm

00:06:02| Deleted...OK!

00:06:02| Uploading file /tpa/preset/custom/FM_SOUNDS_HOOK_3.itm

00:06:02| Done uploading

00:06:02| Uploading /tpa/preset/custom/FM_THEMES_HOOK_3.itm...

00:06:02| Creating directory /tpa

00:06:02| Creating directory /tpa/preset

00:06:02| Creating directory /tpa/preset/custom

00:06:02| Deleting file /tpa/preset/custom/FM_THEMES_HOOK_3.itm

00:06:02| Deleted...OK!

00:06:02| Uploading file /tpa/preset/custom/FM_THEMES_HOOK_3.itm

00:06:02| Done uploading

00:06:02| Uploading /tpa/preset/custom/FM_VIDEOS_HOOK_3.itm...

00:06:02| Creating directory /tpa

00:06:02| Creating directory /tpa/preset

00:06:02| Creating directory /tpa/preset/custom

00:06:02| Deleting file /tpa/preset/custom/FM_VIDEOS_HOOK_3.itm

00:06:02| Deleted...OK!

00:06:02| Uploading file /tpa/preset/custom/FM_VIDEOS_HOOK_3.itm

00:06:03| Done uploading

00:06:03| Uploading /tpa/preset/custom/GAMES_HOOK_1.itm...

00:06:03| Creating directory /tpa

00:06:03| Creating directory /tpa/preset

00:06:03| Creating directory /tpa/preset/custom

00:06:03| Deleting file /tpa/preset/custom/GAMES_HOOK_1.itm

00:06:03| Deleted...OK!

00:06:03| Uploading file /tpa/preset/custom/GAMES_HOOK_1.itm

00:06:03| Done uploading

00:06:03| Uploading /tpa/preset/custom/GAMES_HOOK_3.itm...

00:06:03| Creating directory /tpa

00:06:03| Creating directory /tpa/preset

00:06:03| Creating directory /tpa/preset/custom

00:06:03| Deleting file /tpa/preset/custom/GAMES_HOOK_3.itm

00:06:03| Deleted...OK!

00:06:03| Uploading file /tpa/preset/custom/GAMES_HOOK_3.itm

00:06:03| Done uploading

00:06:03| Uploading /tpa/preset/custom/SETT_RINGTONE_HOOK_1.itm...

00:06:03| Creating directory /tpa

00:06:03| Creating directory /tpa/preset

00:06:03| Creating directory /tpa/preset/custom

00:06:03| Deleting file /tpa/preset/custom/SETT_RINGTONE_HOOK_1.itm

00:06:03| Deleted...OK!

00:06:03| Uploading file /tpa/preset/custom/SETT_RINGTONE_HOOK_1.itm

00:06:04| Done uploading

00:06:04| Uploading /tpa/preset/custom/SETT_RINGTONE_HOOK_2.itm...

00:06:04| Creating directory /tpa

00:06:04| Creating directory /tpa/preset

00:06:04| Creating directory /tpa/preset/custom

00:06:04| Deleting file /tpa/preset/custom/SETT_RINGTONE_HOOK_2.itm

00:06:04| Deleted...OK!

00:06:04| Uploading file /tpa/preset/custom/SETT_RINGTONE_HOOK_2.itm

00:06:04| Done uploading

00:06:04| Uploading /tpa/preset/custom/SETT_RINGTONE_HOOK_3.itm...

00:06:04| Creating directory /tpa

00:06:04| Creating directory /tpa/preset

00:06:04| Creating directory /tpa/preset/custom

00:06:04| Deleting file /tpa/preset/custom/SETT_RINGTONE_HOOK_3.itm

00:06:04| Deleted...OK!

00:06:04| Uploading file /tpa/preset/custom/SETT_RINGTONE_HOOK_3.itm

00:06:04| Done uploading

00:06:04| Uploading /tpa/preset/custom/SETT_SCREENSAVER_HOOK_1.itm...

00:06:04| Creating directory /tpa

00:06:04| Creating directory /tpa/preset

00:06:04| Creating directory /tpa/preset/custom

00:06:04| Deleting file /tpa/preset/custom/SETT_SCREENSAVER_HOOK_1.itm

00:06:04| Deleted...OK!

00:06:04| Uploading file /tpa/preset/custom/SETT_SCREENSAVER_HOOK_1.itm

00:06:05| Done uploading

00:06:05| Uploading /tpa/preset/custom/SETT_STARTSHOW_HOOK_1.itm...

00:06:05| Creating directory /tpa

00:06:05| Creating directory /tpa/preset

00:06:05| Creating directory /tpa/preset/custom

00:06:05| Deleting file /tpa/preset/custom/SETT_STARTSHOW_HOOK_1.itm

00:06:05| Deleted...OK!

00:06:05| Uploading file /tpa/preset/custom/SETT_STARTSHOW_HOOK_1.itm

00:06:05| Done uploading

00:06:05| Uploading /tpa/preset/custom/SETT_WALLPAPER_HOOK_1.itm...

00:06:05| Creating directory /tpa

00:06:05| Creating directory /tpa/preset

00:06:05| Creating directory /tpa/preset/custom

00:06:05| Deleting file /tpa/preset/custom/SETT_WALLPAPER_HOOK_1.itm

00:06:05| Deleted...OK!

00:06:05| Uploading file /tpa/preset/custom/SETT_WALLPAPER_HOOK_1.itm

00:06:05| Done uploading

00:06:05| Uploading /tpa/preset/custom/customize.xml...

00:06:05| Creating directory /tpa

00:06:05| Creating directory /tpa/preset

00:06:05| Creating directory /tpa/preset/custom

00:06:05| Deleting file /tpa/preset/custom/customize.xml

00:06:05| Deleted...OK!

00:06:05| Uploading file /tpa/preset/custom/customize.xml

00:06:05| Done uploading

00:06:05| Uploading /files_to_upload to phone...

00:06:05| Sending shutdown command to phone...

00:06:05| Customizing was SUCCESSFUL!

00:06:05| Disconnecting phone...

00:06:05| You may now unplug your phone.

00:06:05| Flashing was successful

00:06:07| Disconnected... Unplug the phone