[Formula84]

Originally Posted by Zaphod-Beeblebrox

I get to answer the first part of my own question!
Registry Key is here:
\HKLM\SOFTWARE\Spb Software House 2\Spb Mobile Shell\InternetSearch\DefaultUrl
Entry has '%%s' when it should have just '%s'.
I don't know how to cab a .reg file, so I just exported the key in the attached file.

I'm still working on how to change to Opera Mini 5

Thank you for finding that fix, will be corrected next build.