After switching from the native firmware Italy (TIM) with PDA: N7000XXLT5, CSC: N7000TIMLT2, MODEM: N7000XXLT3 to firmware PDA: LT4 CSC: LT4 PHONE: LT3 (I think it's German)
the phone has become drained rapidly, with a sharp drop from the level of 70% of battery. This happens when using WiFi and GPRS / EDGE.
Thus I have to change the battery regularly to the spare one. Both batteries are used. But I still think the problem is in the radio module.
Question - is it worth to spend time and to reinstall the native firmware again or the problem is most likely in the battery?
Could the firmware effect the quality of work of the radio module?
P.S. Master did re-flash the German firmware because he could find Italy (TIM) - now the original one is available too.