Nvram Error in wlan list

I have formatted by mistake Nvram memory of my Lenovo P770 (MTK 6577) with Sp format tool. Unfortunately, as a consequence I have lost IMEi. after research , have i successful restored the IMEI back. now im having a problem : in Wlan shows me > nvram warning err 0 x10

How I can solve the problem? Unfortunately i didnt make any backup for Nvram memory :crying:

has it something to do perhaps with Mac Adresse?

Thank you very much


OSman