I’ve got an HTC Imagio that came pre-loaded with Opera 9.5. I decided to try out the two newer versions of Opera (9.7 and 10) though to see if I preferred either of them but in the end decided to just stick with 9.5. I uninstalled the two newer versions and all was fine except for the fact that Internet Explorer was now the default browser on my device.
Opera 9.5 doesn’t seem to have an option in the app itself to set itself as the default browser. I searched the web plenty and found some threads on ppcgeeks.com that pointed to the following registry key as the one that you need to set to change the default browser:
HKLM\Software\Microsoft\Shell\Rai\DEFBROWSER\0
Value = Opera Browser
HKLM\Software\Microsoft\Shell\Rai\DEFBROWSER\1
Value = “\Windows\OperaL.exe”


