Hi all, I am currently running on firmware 1.8 in the aircraft and do not wish at this point to upgrade, however I have just purchased a new battery and would like to ensure that it's firmware matches my other batteries. I tried t find the info on the DJI website but could not locate it so my questions: Which firmware would I need to load onto my SD card to enable me to update/ensure the same firmware gets loaded onto the new battery as is on my other batteries without having to update the aircraft as I am happy running the aircraft on 1.8 and do not want to go to 1.9 yet I know that not all firmware releases include an update for the battery so which was the last firmware revision that also included a battery update? was it 1.7? Hope my ramblings make sense? Bryn.