How to install an application signing certificate on a Motorola Phone?

Question

Motorola phones do not have Verisign/Thawte root certificates for code signing. They only embed Java UTI certificate, that requires you to pay to sign your application for every phone model you want to sign the app for (and this, every time you want a new version of the app).

I've created a simple web page pointing to a certificate (DER format) to check if the certificate can be installed.

On Nokia phones, it works ok. On Motorola, the phone says "unknown file format".

Is there a way to make this work? The file has an ".cer" extension, is it wrong?

Thanks in advance!

Answer 1

Last time I had to do something like that, I'm afraid that required getting Motorola itslef to sign the application. That was before the Motorola mobile division current issues, though. Hopefully, this is still possible.