How I rolled back DJI GO4 app in IOS 11.2

shutter13 · Jan 3, 2018

Pretty much before I ever opened the Spark for Christmas, I knew I wanted to use an OTG cable. It seems like a no brainer, to me, that a wired connection between my device and the remote will be more robust and reliable and resistant to interference, than a wireless connection. So I tried to roll back the DJI GO4 app on my iPad and my iPhone. I was stymied, because I was on IOS 11.2.1 and I was using the iPhone X, I went through all the steps, only to be told the older version of iTunes would not connect to my devices.

Today I found a solution. I'm sure some of you already knew this, this is for the ones that don't.

Apple removed the apps section in iTunes 12.7, all the instructions I had to roll back the apps used iTunes 12.3.xx. Apparently Apple released (re-released??) 12.6.3 in order for businesses that control the apps on their phones, and it will work with iPhone X.

At any rate I followed the instructions on this video by youtube user digdat0.
https://www.youtube.com/channel/UC9d3XHI8Vn3mnsGUctM54dA
I had issues with Charles not interrupting the download, I found this video, by the same user, resolved that issue.

iTunes 12.6.3 can be found as an official download on this apple support page.
Deploy apps in a business environment with iTunes

I used ifunbox to back up my flight logs and flight record.

I have done this on my iPad and taken my Spark on a test flight, it worked fine and the "weak signal transmission" error was gone.

I take no responsibility for anything that may happen if you follow these instructions (outline), good or bad.

I would also recommend turning off automatic updates in your itunes & app store settings.

About page for DJI GO4 app iPhone X

About page for DJI GO4 app on 2017 iPad

webvan · Jan 3, 2018

Sounds interesting and good news because I was under the impression that DJI had somehow "interfered" with OTG directly in the Spark's firmware as I got issues with my Android device using an old 4.1.9 version of the app...

hostar · Jan 10, 2018

Are you saying you can't use otg using the most up to date firmware on the spark and up to date dji go version? I am using iPhone 7 with OTG and everytthing is up to date and it works fine.

shutter13 · Jan 10, 2018

hostar said:
Are you saying you can't use otg using the most up to date firmware on the spark and up to date dji go version? I am using iPhone 7 with OTG and everytthing is up to date and it works fine.

No, otg works, but there is an error. The “weak transmission signal” error. If DJI go4 is reporting a weak transmission signal, when there is none...what else is it misrepresenting? I have decided to simply work with it the way it was intended. I let the app update a day or so ago.

hostar · Jan 12, 2018

shutter13 said:
No, otg works, but there is an error. The “weak transmission signal” error. If DJI go4 is reporting a weak transmission signal, when there is none...what else is it misrepresenting? I have decided to simply work with it the way it was intended. I let the app update a day or so ago.

I do get the weak transmission signal error when using OTG. I have to try my long distance flight without OTG and see if there truly a difference in distance. But you are correct on DJI misrepresenting the facts when the transmission signal is not weak