Will my battery last longer if I update ROM?

[Guest fashion_m]

I have PAHHC ROM and battery lasts 3-4 days on normal use. If I update the ROM will the battery perform better?

[Guest leap_ahead]

I have PAHHC ROM and battery lasts 3-4 days on normal use. If I update the ROM will the battery perform better?

for this you must change Radio no rom ..but your batttery its ok !! mine only 2+ days..