Been waiting all week to get her up. I tried many times to get new home lock and course lock. I doubt my s2 switch was faulty as i had already replaced it. hooked up to the Phantom assistance and the switches worked fine. I noticed there was considereable lag on the S2 switch. I tried it again with the bird hooked to the assistance. Did it slowly and it worked 1 out of 10 times. There is a clear issue. Can others try this please and report back. To test IOC: Make sure NAZA-M is activated and IOC box is checked. on the left S2 toggle switch: New Course DIrection lock = top to mid position x 5 and it will flash green rapidly. New Home lock = mid to bottom position x 5 and it will flash green rapidly. The radar will alter in distance and the arrow will change if any of the above is successful. I have a decent understanding of the bird. Stock bird running 3.06 with GPS foil mod. Phantom hasnt been crashed and always catch-landed. I cant revert back to 1.08 because i have severe TBE (laxitives wont work). Transmitter is calibrated and i know how to compass dance. IMU adv and basic done on a levelled surface. I have tested on Iphone 4s with latest update and on Galaxy note 2 with 4.2 android. I'm thinking its firmware related. Many thanks.