Thoughts on hacking Mavic 2 NFZ/HEIGHT/SPEED...

DanMan32 · Nov 22, 2018

Thing is, someone was at at absolute max height, and it auto-landed on them at 30%. Belief was that it needed a lot to safely come down so instead of critical land at around 10% which is more typical, it critical landed at 30%.

jodi2 · Nov 22, 2018

Hmm, I guess you're right, it needs much more reserves. I already had one unplanned landing, when it started to land at 14% only 300-400m away from me. With a few tries to stop landing/to continue, I finally landed 200m away at 8%.
Probably this will be much more if it's further away with the normal unhacked firmware.
I will do a few test flights starting at 4000m follwing the mountain side up to 4500m and coming back and se what's left in the box...

sar104 · Nov 22, 2018

DanMan32 said:
Thing is, someone was at at absolute max height, and it auto-landed on them at 30%. Belief was that it needed a lot to safely come down so instead of critical land at around 10% which is more typical, it critical landed at 30%.

That's not how it works. There is no set critical landing level. The FC does an ongoing calculation of battery level required to descend to the ground at 3 m/s with a 10 - 15% safety margin (SMART_BATTERY_landBattery in the flight log). When the battery % reaches that level, autoland is initiated.

So critical landing may well be initiated around 30%, but only because the FC calculates that it will require that much to get down, with a safety margin.

dewster · Nov 22, 2018

I’m all for it. Freedom!

thegronz · Nov 22, 2018

fstop.labs said:
It won't be impossible - Mavic 1 makes it very easy, literally a setting via the app (config file change in the drone itself). I don't know about Mavic 2, it may have the same "feature (vulnerability)".

What about using the Litchi app?

maxfaxdude · Nov 23, 2018

Legit video of hacked Mavic Pro 2 doing flips? I have my doubts, but here's the youtube link.

sar104 · Nov 23, 2018

maxfaxdude said:
Legit video of hacked Mavic Pro 2 doing flips? I have my doubts, but here's the youtube link.

If it is then it's obviously in manual mode, which is relatively easy - just set one of the fswitch_selection values to zero to access it from the flight mode switch.

jodi2 · Nov 23, 2018

As I build&fly as well 4+5" over-motorized FPV racers, I can easily say, this is one of this kind. No "normal motorized" camera drone can do flips that fast/tight and stable like this. Before my P3 I had a blade 350QX (similar size&motors as P3) which was able to do acro and flips, but far away form this video. I also don't understand how anyone can believe it's a Mavic in this video without any proof or at least a try of a proof.

sar104 · Nov 23, 2018

jodi2 said:
As I build&fly as well 4+5" over-motorized FPV racers, I can easily say, this is one of this kind. No "normal motorized" camera drone can do flips that fast/tight and stable like this. Before my P3 I had a blade 350QX (similar size&motors as P3) which was able to do acro and flips, but far away form this video. I also don't understand how anyone can believe it's a Mavic in this video without any proof or at least a try of a proof.

It doesn't sound like a Mavic.

lolo780 · Nov 23, 2018

M1, M2 and P4 all work in manual mode. I'm about to try an Inspire soon.

mavicn00b · Nov 23, 2018

Mavhawk said:
Ok, I've got a really scary, hair-brain idea that I'm almost sure wouldn't work, but.....What if you were to fly up to a ledge or rock up a mountain, set the drone down on it and re-set the home point. Keep doing that till your as high as you want, but I can already see the pitfalls. What flat area could you possibly find on a mountain to do that, and one false move and you crash or, what if your drone won't start up again, etc. etc. Believe it or not, I'm not on drugs, but I probably sound like I am. I can just see the desperation here, not being able to fly those beautiful vistas because of the altitude limit. Marc.

Its already been done with Mavic Air.

lolo780 · Nov 24, 2018

mavicn00b said:
Its already been done with Mavic Air.

That was painful to watch. WiFi is for toys.

mavicn00b · Nov 24, 2018

lolo780 said:
That was painful to watch. WiFi is for toys.

Thats one heck of a toy!

jodi2 · Nov 24, 2018

"Painful" ist the right word, how stupid and ruthless can one single person be.... What a pity that his Mavic did not stay on the top or crashed with 0% battery in the trees. I hope he received his "reward" somehow...
Ok, I will ask the local mayor to build a wooden landing area an 4700m and with good line of sight for me!;-)
I think it just need some time after a few batteries searching the area in 4700m I might find a suited area.

kilomikebravo · Nov 24, 2018

sar104 said:
It doesn't sound like a Mavic

Definitely not, SAR. It sounds exactly like all the other FPV drone videos.

jcase · Dec 13, 2018

jaysrmc said:
We are working on it. We are able to SSH into the drone but that is as far as I have gotten. Give it some time, we will have it soon I hope.

Uhh there is no sshd binary on the mavic 2. You can not ssh into it.

I can ensure you that the m2 does not have a ssh server.

jcase · Dec 13, 2018

While others are "Working on it" aka blowing smoke making false claims, let me drop some goods on your heads.

Mavic 2 RC firmware via adb pull https://cdn.nolimitdronez.com/dumps/m2rc_dump.zip
Mavic 2 AC firmware, via adb pull http://cdn.nolimitdronez.com/dumps/mavic2_dump.zip

NLD is providing hosting for me, because I would rather not blow up my dropbox.

AC has two android systems running, 0801 which is the Allwinner SOC, and 0901 which is the leadcore SOC. The LC soc is mostly worthless, it acts as the modem control interface. 0801 is when you can do things like disable NFZ etc.

jcase · Dec 13, 2018

jaysrmc said:
no but you have to connect directly to the board to gain ssh.. The is on a M2P that was crashed by someone were just trying not to brick it. Direct SSH connected to the micro usb port on the mainbaord.

There is no micro usb port on the main board, there are two USB C ports, but no micro usb ports.

Rockowe · Dec 13, 2018

maxfaxdude said:
The Mavic Pro 2 firmware will eventually be hacked into...just give it time.

Im able to speed up the rate of descent and ascent - to more than Double the rate-
Also the Pitch ROLL of the 'DISH' can be modified from 25deg to say 50deg which allows more speed -

However that's just for acceleration - … I think theres a Hard Limit to 72km/hr - (even with tailwind) - which is different from the Mavic 1

DanMan32 · Dec 13, 2018

sar104 said:
That's not how it works. There is no set critical landing level. The FC does an ongoing calculation of battery level required to descend to the ground at 3 m/s with a 10 - 15% safety margin (SMART_BATTERY_landBattery in the flight log). When the battery % reaches that level, autoland is initiated.

So critical landing may well be initiated around 30%, but only because the FC calculates that it will require that much to get down, with a safety margin.

That's pretty much what I said.
TYPICALLY it critical lands at AROUND 10%. That leaves room for fuzzy logic.