Thanks for all the help.

I have been right back through the tutorial and flashed firmware (K810_R8BF003_MAIN_GENERIC_SM_RED53), file system (K810_R8BF003_FS_TELEF_GEN_RED53) and custom pack (HB1-06_Gen_CDA102568_11_R6A_GENERIC_EUROPE_2), following all of the steps in order, but I still have the same problem.

Log now reads...

18:11:29| Baseband ID: 9900

18:11:29| Protocol Version: 3.1

18:11:30| Warning: IMEI name does not match GDFS name (IMEI:K800 GDFS:K810)

18:11:30| ...using IMEI name

18:11:30|

18:11:30| Profiling SEMC phone...

18:11:30| Platform: DB2020

18:11:30| OTP CID: 49

18:11:30| EROM CID: 53

18:11:30| EROM Color: Red

18:11:30| IMEI: 35342701xxxxxx

18:11:30| Phone ID: K800

18:11:30| Region: EUROPE_2

18:11:30| CDA: CDA102511/2 R10A

18:11:30| Firmware Version: R8BF003

18:11:30| EROM: R3A022

18:11:30| Ready for operation!

18:11:41| Sorry, your phone is NOT SUPPORTED

18:11:41| Sendinging shutdown signal to phone...

18:11:43| Shutting down...

I am sorry if I am doing something stupid, but I have looked at loads of threads and tutorials and just seem to be going round in circles, apart from the phone is now unlocked which is great. I just need to get it to work!