hi bardhi mate,
i apologize. i don't share the c3 patch for this release to make it work for c3.
The new 6 months time limit of MB policy, was set for this release including its sisters xentry xp (12-2015) and xentry passthru (12-2015 & 03-2016)
this is the steps to make it work again.
1. change date back
2. start xentry
3. set back to current date
the step no 3 is optional but quite important especially when you have to print a report of the diagnose result to your customer, claiming warranty or... for SCN online. Cmiiw, for SCN online, needs update profi_cd in sdflash folder with the recent one.
this steps are also valid for expired xdos and passthru (12-2015 and 03-2016).
and best of all, you can make a simple batch/script file to automate those 3 steps.
Until you get the batch file for replacement of your current xentry and xentry sim shortcut, you have to repeat the above 3 steps again.