I tested the Active Track on mine (while wearing my new backpack) on my mountain bike recently. I was really pleased with the Mavic 4's capability. Looking forward to doing more testing soon.
Glad you like it as much I have mine over the last five years. Sorry I didn't sing it's praises well enough.
Take a black sharpie and blackout the Lowepro stitching and it becomes less conspicuous.
I don't think anyone's description here provides justice to how good this bag really is. I received mine a few days ago but only just got looking into it. Its extremely well laid out, has pockets, zippers and space for a whole lot of stuff...
I switched zerbra off even in my A3S; it messes up my screen controller recording. I remember when I first commenced flying my A3S, I was clueless to why I'm seeing stripes across controller screen; it was a while before I realized what it was...
FYI: Never had any issues, with any firmware versions on the Mavic 4 Pro or my A3S which are currently updated to latest firmware versions respectively. Both drones were ordered directly from DJI. There were no issues in backward flight either...