It’s been awhile since I used my Spark and I have forgotten most of what I knew about the AC firmware, RC firmware, and GO4 app version. I want my Spark to be able to have the most solid connection for TX range distance and GO4 app video reception. No other parameters or options are important to me, just need a robust a connection as possible from RC to AC with smooth video downlink. Please correct me if I am wrong, but as I understand the best connection method is using an OTG cable, forced setting to 2.4ghz mode in GO4 app, and using the 4.1.14 GO4 app for android. Is this setup the best for my stable range connection and video reception priority? I am currently on 01.00.1000 AC firmware and 01.00.0600 RC firmware using GO4 4.1.14 on a Galaxy Note 9 using DJI’s official short white OTG Spark cable to a straight USB-C cable. Range test today in forced 2.4ghz mode on channel 2 selected got me about 1k to 1.5k feet before video breakup in suburban environment. Any help appreciated!