No .dat files

Bbarr · Jan 21, 2020

I have no dat files on my iPad air2. Read that this is a problem. Is there a fix ?

slup · Jan 21, 2020

From the Flight log retrieval and analysis guide

"In some cases, for reasons not fully explained but possibly mobile-device hardware related, and most often under Android, DAT files are not created and that folder is empty. Uninstalling and reinstalling the app sometimes fixes that. One user also found that the process required manual deletion of the app folder (apparently not deleted automatically in the uninstall process) before reinstalling the app."

JAW · Jan 21, 2020

slup said:
From the Flight log retrieval and analysis guide

"In some cases, for reasons not fully explained but possibly mobile-device hardware related, and most often under Android, DAT files are not created .......”

He’s running iOS on an iPad but the fix still might work.

sar104 · Jan 21, 2020

I would definitely try deleting and then reinstalling the DJI GO 4 app.

Bbarr · Jan 21, 2020

Thank you. I read somewhere that IOS has to be told to allow access to these dat files, but for the life of me I can’t find it.

sar104 · Jan 21, 2020

Bbarr said:
Thank you. I read somewhere that IOS has to be told to allow access to these dat files, but for the life of me I can’t find it.

Allow access to the user, or to the app? The user has default access to all app directories, and the app already has access to files in its own directory, so I'm not sure why any further privileges should be necessary. I've certainly never had to grant access.

Bbarr · Jan 21, 2020

Don’t know , but I flew with my iphone xr and same . Did a search for *. dat and nothing ?

sar104 · Jan 21, 2020

Bbarr said:
Don’t know , but I flew with my iphone xr and same . Did a search for *. dat and nothing ?

Have you read the retrieval instructions?

Flight log retrieval and analysis guide

Bbarr · Jan 21, 2020

Yes many times. So the only try is delete and reload ? Hell I’ll give it a try. Seems odd its the same on phone and ipad.

sar104 · Jan 21, 2020

Bbarr said:
Yes many times. So the only try is delete and reload ? Hell I’ll give it a try. Seems odd its the same on phone and ipad.

So the MCDatFlightRecords folder is empty, or doesn't exist? Are the txt logs being created? Which Mavic model is this?

Bbarr · Jan 21, 2020

sar104 said:
I would definitely try deleting and then reinstalling the DJI GO 4 app.

sar104 said:
So the MCDatFlightRecords folder is empty, or doesn't exist? Are the txt logs being created? Which Mavic model is this?

Its empty Mini Txt is fine

sar104 · Jan 21, 2020

Bbarr said:
Its empty Mini Txt is fine

That seems to be a relatively common issue with the Mini. I haven't seen an explanation or a fix yet. Are you on the latest firmware and app versions, and do you have the DJI GO 4 app on your devices too, or just the Fly app?

Bbarr · Jan 21, 2020

sar104 said:
That seems to be a relatively common issue with the Mini. I haven't seen an explanation or a fix yet. Are you on the latest firmware and app versions, and do you have the DJI GO 4 app on your devices too, or just the Fly app?

Yes 1.06 only Fly
Thanks

new2mavic · Feb 3, 2020

OK, this is strange for me.

I have owned a number of M2P and for two of them, I could get .DAT file for one but not the other. Both crafts have firmware version 510 and use regular controller + iphone + DJI GO4.

I have sold one of them and today I just found that the flight records in DJI GO4 has got the .DAT file for the sold M2P but none for the M2P in hand. The .txt files are there for both crafts though.

Are there anything I should try to get the .DAT files recorded for the M2P in hand ? Not sure if this is relevant but I have got DJI GO mod app ( base on v24 ) and DJI FLY installed in the same iphone. From iTune, I can see that the files for each app are seperately stored. Futhermore I always make sure that only one DJI app is running and the others are all killed in advance.

slup · Feb 3, 2020

new2mavic said:
OK, this is strange for me.

I have owned a number of M2P and for two of them, I could get .DAT file for one but not the other. Both crafts have firmware version 510 and use regular controller + iphone + DJI GO4.

I have sold one of them and today I just found that the flight records in DJI GO4 has got the .DAT file for the sold M2P but none for the M2P in hand. The .txt files are there for both crafts though.

Are there anything I should try to get the .DAT files recorded for the M2P in hand ? Not sure if this is relevant but I have got DJI GO mod app ( base on v24 ) and DJI FLY installed in the same iphone. From iTune, I can see that the files for each app are seperately stored. Futhermore I always make sure that only one DJI app is running and the others are all killed in advance.

Can't say anything about this for GO4 ... but if you own a Mini can you try the theory about syncing to DJI servers deletes the DAT.

Stop autosync, generate DAT either by just power on AC for a short while or fly for real ... power off & check if you've got a DAT. Then sync to DJI & check if DAT still is there.