Flash K800 CID53 with K810 software CID53 (for begginers)

[greigwan]

hi i have a k800i and ive tried in vain for hours to de-brand the phone from 3 network uk to use my o2 sim.I have flashed 3 versions(r1kg001red53), k800 hutchison packs and generic packs then tried reflashing to k810 but when ive finished and switch on afterwards please wait message."unsuccessful" ALWAYS appears before start up.dont know where iam going wrong here is the log from xs++ AFTER LATEST ATTEMPT:
12:40:25| Baseband ID: 9900
12:40:25| Protocol Version: 3.1
12:40:25| Warning: IMEI name does not match GDFS name (IMEI:K800 GDFS:K810)
12:40:25| ...using IMEI name
12:40:25| Profiling SEMC phone...
12:40:25| Platform: DB2020
12:40:25| OTP CID: 51
12:40:25| EROM CID: 53
12:40:25| EROM Color: Red
12:40:25| IMEI: 35570401xxxxxx
12:40:25| Phone ID: K800
12:40:25| Region: EUROPE_1
12:40:25| CDA: CDA102568/10 R8A
12:40:25| Firmware Version: R1KG001
12:40:25| EROM: R3A022

[senter]

hi i have a k800i and ive tried in vain for hours to de-brand the phone from 3 network uk to use my o2 sim.I have flashed 3 versions(r1kg001red53), k800 hutchison packs and generic packs then tried reflashing to k810 but when ive finished and switch on afterwards please wait message."unsuccessful" ALWAYS appears before start up.dont know where iam going wrong here is the log from xs++ AFTER LATEST ATTEMPT:
12:40:25| Baseband ID: 9900
12:40:25| Protocol Version: 3.1
12:40:25| Warning: IMEI name does not match GDFS name (IMEI:K800 GDFS:K810)
12:40:25| ...using IMEI name
12:40:25| Profiling SEMC phone...
12:40:25| Platform: DB2020
12:40:25| OTP CID: 51
12:40:25| EROM CID: 53
12:40:25| EROM Color: Red
12:40:25| IMEI: 35570401xxxxxx
12:40:25| Phone ID: K800
12:40:25| Region: EUROPE_1
12:40:25| CDA: CDA102568/10 R8A
12:40:25| Firmware Version: R1KG001
12:40:25| EROM: R3A022

Must use these files:

K810_R1KG001_MAIN_GENERIC_SM_RED53
K810_R1KG001_FS_EUROPE_1_RED53
HB1-06_Gen_CDA102568_10_R8A_GENERIC_EUROPE_1

If you have flashing white screen just again back to K800 with these files:

K800_R8BF003_MAIN_GENERIC_WI_RED53
K800_R8BF003_FS_EUROPE_1_RED53
HB1-06_Generic_CDA102568_10_R4A_GENERIC_EUROPE_1