How to solve the Nokia 5800 “Expired Certificate” error that fails most SIS program files installation?
I used Nokia PC Suite to backup all these four components instead of using Nokia 5800 inbuilt backup function, which doesn’t has an option to backup Notes (but I’m not sure the ALL settings will back up the Notes). Remove the microSD memory card. When the phone is powered on, don’t simply remove the memory card. Otherwise, the memory card content will likely corrupt. To remove the microSD card when the Nokia 5800 is switched on, press the power key (the button next to the power charging port), scroll down to locate and select Remove Memory Card, opt “Yes” as the “Removing memory card will close all open applications. Remove anyway?” message is displayed. Shortly after, the “Remove Memory Card and press OK” message appears, and then the microSD is ready to be unplugged or removed from the dedicated slot. Notes, both SIM card and microSD card slot are next to each other on the same side (another defect, personally), don’t be careless and end up corrupting the SIM card (if you happen remo
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