Youcan install a signer application straight onto your 5800, and sign iton your phone. To do this, we’re going to use an application calledFreeSigner, which you can download from below
Using FreeSigner is really simple;
Pre-requisites:
FreeSigner (download link below).
your developer certificate (you can request for your certificate and key file from us)
COMPLETE STEP BY STEP FOR SIGNING PROCESS:
Copyyour developer certificate and key file into a directory on my memorycard, in the “Certs” sub-folder under the “Documents” folder, so it’slocated in “E:\Documents\Certs”,
Place it anywhere you can find it easily later.
Havinginstalled FreeSigner on your phone, launch it from the “Applications”menu. You need to configure some settings first. Tapping “Options” -“Settings” will bring up the following screen:

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