Here are 3 threads offering possible solutions to the GPS issue on the DHD.
Hardware solution fixing the contacts beneath the flash where the GPS is housed:
DHD GPS issue fixed, 10000% working - xda-developers
Related Youtube Disassembly Video:
YouTube - ‪HTC Desire HD Disassembly Video‬‏
Solution involving porting over some missing FroYo data:
GPS Solution revisited Sense gingerbread. - xda-developers
Solution involving the clearance of the EFS data:
[GUIDE] How to fix the GPS issue on CM and others - xda-developers
I'll be working through these but just wanted to point them to others who might fancy testing them with me for better test results.
Hardware solution fixing the contacts beneath the flash where the GPS is housed:
DHD GPS issue fixed, 10000% working - xda-developers
Related Youtube Disassembly Video:
YouTube - ‪HTC Desire HD Disassembly Video‬‏
Solution involving porting over some missing FroYo data:
GPS Solution revisited Sense gingerbread. - xda-developers
Solution involving the clearance of the EFS data:
[GUIDE] How to fix the GPS issue on CM and others - xda-developers
I'll be working through these but just wanted to point them to others who might fancy testing them with me for better test results.