Help find a modem for LGE988

Hi guys. I live in Ukraine, so it must be a CIS modem i think.
Everything works great on JB and KK, but it's not working on Lollipop. I tried every modem which i found on 4pda, but none of them works properly. Could you share a modem with me? I'll try any that you suggest.
Will be waiting for replies. Thanks.