Please reflash your sim with the latest OS for DM800HDseV2, you will find it here :

http://www.ourdreambox.com/ubbthreads.php?ubb=showflat&Number=352#Post352

When you use the secondstage-dm800se-84-allsim, you will never have NO CA FOUND / ERROR... so be sure you really flashed it properly and that the sim is properly inserted on the Sim socket on the motherboard.

You need to do exactly as explained on the Tutorial, step by step and not jump not doing some of the steps. It works 100%, in all conditions.

http://www.ourdreambox.com/ubbthreads.php?ubb=showflat&Number=11286#Post11286

In your case, as you ordered the sim before the new OS release, you will need to flash the July OS to have the box working.

Please do exactly step by step as explained above.

Admin
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