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Note:Please download only E63 series Themes only.......not other phone themes...
To solve this problem follow the steps:
1)Go to Menu-> Tools-> Application Manager 2) Then press (options) button, select (settings) 3) Make sure <Software installation > is set to "All" and < Online certif.check > is set to "Off"
Some time you get certificate expire to solve this you have to change the date.This is to prevent the users from using expired application: If you encounter Expired Certificate error during installation, please set your phone date to 03/03/2007 before installion of the theme .You can reset your phone date back after installation. If still the problem persist Change the PC date also because it will get synchronized with your mobile and try different dates so that it will match the application date.(Reason is every application is valid for a period of time example.from 03/03/2007 to 03/09/2007 so you have to give date between this.So try old dates usually some years back...
Please do rate the solution if the issue is resolved or post a comment for further assistance.
time & date Your phone needs the time and date for the datebook. To synchronize the time and date with the network: Press - > Settings > Initial Setup > Time and Date > Autoupdate > On To set the time and date: Press - > Settings > Initial Setup > Time and Date > time or date. To choose an analog or digital clock for your home screen, press - > Settings > Personalize > Home Screen > Clock > Analog or Digital.