come on infovir is just"adefovir" an obsolete drug used to manage hbv replication. It has a high rate of drug resistance and toxicity than todays first line drugs entecavir and tenofovir. It can never Cure hbv except rarely where individuals are naturally proned to clear the infections.
Honestly there is no certain cure for hbv today and atleast will not be till next 2-3 years for sure.