Null IMEI ONLY on Lollipop

Hey guys, I have a problem. My IMEI nullified after I flashed a custom rom. I followed this tutorial: http://ift.tt/1S9qEOG . My IMEI is back. After, I updated my zenfone 5 via FOTA, and from the last kitkat firmware I updated to Lollipop. IMEI is gone. After, I followed again the tutorial, and restore my lollipop backup from twrp. IMEI is gone again. I tried too restore mymmcblk0p3 backup from kitkat, but nothing changed. What I do please? :(

A BIG SORRY for my bad english.

EDIT: baseband null too

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