How to rollback Mavic firmware

Xtreme Drone Pilot · Dec 4, 2017

Daoud333 said:
Th pitch is adjustable in firmware .900 and above.

In unmodded FW it's adjustable? I didn't know that.

Daoud333 · Dec 4, 2017

Yes there is a button on the left bottom to unlock or lock the gimbal.

Hotelone · Dec 4, 2017

ChrisJP said:
Wanted to do a FW backup to confirm that I could upload a different version (I'm on 01.04.0000).
Using DUMLdore v2.0, I failed miserably, getting backup bin file about 20kB only.

Finally found the remedy: for x32 Windows user (like me!) please follow this link:
backup firmware can't work properly · Issue #21 · jezzab/DUMLdore · GitHub

I've just completed the backup and got the following files:
AC bin: 105 MB (110,151,680 bytes)
RC bin: 133 MB (140,144,640 bytes)*

EDIT
Finally managed to grab the two "Web Bin" (RC/AC) and compared content with my "backup Bin" using Z-zip.
=> AC Bin (Web & Backup) are strictly identical
=> RC "backup bin" contains both the Web RC + Web AC bin files [hence the larger file].

Please forgive this n00b but I'm also on a x32 virtualization and:
"Copy the following 3 files from the openssl-0.9.8s-i386-win32.zip into the main folder (overwriting existing) and retry backup. openssl.exe, ssleay32.dll, and libeay32.dll.)"
What "main folder"? I just have the DUMLdore.exe 2.0 file. Do I de-compile DUMLdore somehow? (Yes I'm new to this) TIA

ChrisJP · Dec 4, 2017

You should get the DUMLdore.zip.
Once uncompressed, you will see the 3 files in the same directory as DUMLdore.exe
Replace those 3 files.
Here the direct link to the 3 file
https://indy.fulgan.com/SSL/openssl-0.9.8s-i386-win32.zip

Hotelone · Dec 4, 2017

Thanks! Know where to find the .zip on Github?

Hotelone · Dec 4, 2017

Hotelone said:
Thanks! Know where to find the .zip on Github?

Never mind, I found one from July. Besides putting the three files in the folder how can I update that one to V2.0? TIA

Hotelone · Dec 4, 2017

Hotelone said:
Never mind, I found one from July. Besides putting the three files in the folder how can I update that one to V2.0? TIA

Disregard, I figured it out. Thanks!

ChrisJP · Dec 4, 2017

Take your time to read all threads, don't rush or you might end up making a mistake and brick your Mavic.
My advice: only do a backup, don't load/flash any firmware till you are really comfortable understanding what you are doing..and till you are familiar looking around for troubleshooting support on the web.

Hotelone · Dec 4, 2017

ChrisJP said:
Take your time to read all threads, don't rush or you might end up making a mistake and brick your Mavic.
My advice: only do a backup, don't load/flash any firmware till you are really comfortable understanding what you are doing..and till you are familiar looking around for troubleshooting support on the web.

I appreciate it. I'm really taking my time - I may end up getting help from NoLimitzDrones anyway. Thanks again!

jkson · Dec 8, 2017

MAVProxyuser has closed him FW repo?

Haloweenhamster · Dec 8, 2017

Its been replaced by
GitHub - cs2000/DankDroneDownloader: A Custom Firmware Download Tool for DJI Drones Written in C#

modbuilder · Dec 9, 2017

Wow! Have read all posts and head is spinning. Understand much of what I've read, but see too many combinations to get a clear picture of whether what I want is doable. I have an older Mavic Pro (Jan 2017), and stopped updating FW at v01.03.0900 on AC/RC, with 4.1.5 on GO4 and v1.0.9 on Assistant2, and everything is stable. Think I'm literate enough to slog through GitHub and ftp/flashing stuff, but will run out of gas quickly if solving errors/failures. Might have trouble with FW mixing, but think I can work through it with what I've read here. Really afraid of bricking the FC, and don't know if I trust NoLimitDronez or FlyFlyDrones to be a safer path. Am using iPad Mini4 on the RC and stopped updating iOS at 10.3.2

Will be doing real estate videography, so would use Quickshots if I could get it. Can achieve similar results flying manually if necessary. Would really like to eliminate NFZ lockouts. I enjoy the RTH feature, but could deal with non-precision landing. Don't need to fly more than 2 miles away from take-off, and just won't fly in winds that are worrisome. Don't need faster speeds than available in default modes. Good quality vids are important.

Is there a set of AC/RC firmware version or mixes, and GO4 version and Assistant2 that would give me those outcomes?

Haloweenhamster · Dec 9, 2017

I would recommend you read
howto:start [dji.retroroms.info]

there's even more info on that site to make your head spin

For quick shots & nfz you will need to mix

Assistant version is fine
App required is 4.1.10 for quick shots
Fw 1.3.700 & 1.3.1000

modbuilder · Dec 9, 2017

Haloweenhamster said:
I would recommend you read
howto:start [dji.retroroms.info]

there's even more info on that site to make your head spin

For quick shots & nfz you will need to mix

Assistant version is fine
App required is 4.1.10 for quick shots
Fw 1.3.700 & 1.3.1000

Thanks for the link and recommendation. Will get started on more head spinning. ..............R

Xtreme Drone Pilot · Dec 9, 2017

modbuilder said:
Will get started on more head spinning

Head spinning is good, we're talking about tweaking FW of a $1K thing, one wrong move and it's a $1K brick. If somebody chews this food for you and puts it in your mouth, it will be like doing a heart surgery remotely by looking at prompts on screen... and you've never even held a scalpel before.

Learn, learn, learn.*

* "but... but... but... it takes EFFORT!!!

"

Quad808 · Dec 9, 2017

I am seeing some misinformation on this thread. Please be careful what advice is being given, and if you aren't sure, don't tell others what to do.
Try to be as accurate as you can in helping others.
For you noobs...if you aren't sure you understand what to do, don't. Enjoy your bird first.

modbuilder · Dec 9, 2017

Xtreme Drone Pilot said:
Head spinning is good, we're talking about tweaking FW of a $1K thing, one wrong move and it's a $1K brick. If somebody chews this food for you and puts it in your mouth, it will be like doing a heart surgery remotely by looking at prompts on screen... and you've never even held a scalpel before.

Learn, learn, learn.*

* "but... but... but... it takes EFFORT!!! "

good analogy. The only counterpoint is that I want to spend time using the AC rather than tinkering with it, so I only want to study enough to do it right once, then lock it down. Kinda sounds like a country western song in the making.

Haloweenhamster · Dec 9, 2017

Quad808 said:
I am seeing some misinformation on this thread. Please be careful what advice is being given, and if you aren't sure, don't tell others what to do.
Try to be as accurate as you can in helping others.

what did you see that's incorrect? It'll be good to know the misinformation (especially if its something I have put I can edit it)

Quad808 · Dec 9, 2017

Haloweenhamster said:
what did you see that's incorrect? It'll be good to know the misinformation (especially if its something I have put I can edit it)

Sorry guys...I posted in the wrong thread! I went back several pages and everything looks good. Apologies!

The only thing I would add is about backups. If you mix modules, you will not get a full backup. The only way to get a full backup is to backup after a full stock firmware flash. With the stock firmware readily available, I don't see the use for backups.

Xtreme Drone Pilot · Dec 9, 2017

Quad808 said:
The only thing I would add is about backups. If you mix modules, you will not get a full backup. The only way to get a full backup is to backup after a full stock firmware flash. With the stock firmware readily available, I don't see the use for backups.

Yeah, I thought the same, backup was usefull for those pioneers/heroes who saved stock firmwares for others to use; making a backup now when you already have exact same file is pointless.