Hi everyone...i guess this post is more about to inform than to ask.... I have a phantom... and it was ok.... i updated to the 4.02 and next flight it was not holding position well.... holds for few seconds and begin to drift faster and faster anda faster... so i have to switch to att mode to fly back... if i switch again to GPS it holds for few seconds and then, again, begin to drift...... i did advanced calibration in the field, and also the gps calibration.. but the same thing.. so, back home, my compass mod values around 1800....always have been there.... i tried to read the phantom configuration file...... and it suddenly change to around 250 - 350 range... so i tried to fix with the magnetics.... the change i was able to do with magnectics (neodimium) was from 250 - 650 tops.... Out of the range dji specify of 1400 - 1600.... So i knew it was not really the compass bucause it was just after reading the phantom configuration file.... Then i tried downgrade to 4.00... unistalling assistant.. resseting configuration.,... nothing changes the MOD value...... After more a little while, i manage somehow to get values up again... but it was around 4000-6000.... so i tried to lower with the magnectics and this time it was staying above 4000......So i tried again loading the phantom config file... and ??? guess what ? the MOD value went back to 250 - 300 range.... I thought this configuration file had something like gains value, like a TXT file.... but it somehow changes also the mod values been read ..... for now i am trying to get back to normal... but no joy.. have you guys had similar issue ?