Peter wrote:
There is certainly a root solution which does this per-app selectively.
There are solutions to unroot the tablet reversibly. By the way, I don’t know whether JeppTC checks for root privileges, but it certainly does check for the presence of some files betraying the rooted status of the system: su and a few others.
Do we have any Android developers/hackers here? It should be possible to decompile JeppTC and remove the anti-root function.
As usual, it’s been visited before
What I don’t know is how much of that stuff you can remove and still have a working tablet.
It appears, from that site and others, that root is needed to sideload the files from PC Jeppview. That was not the case on the Ipad install of JeppTC.
Regarding root cloaking apps, I have found that Magisk Manager needs android v5+, and Root Cloak doesn’t appear to work, not with this app anyway. There is also this:
Simply install the xposed framework and the rootcloack module. Add jepptc in the rootcloack app list and it will run like a breeze.
which I haven’t tried yet.
I don’t think you can patch apk files; they are hashed and crypto-signed. In the last days of Symbian, a Russian programmer examined the bit of Symbian source code which Nokia placed into open source and which fortuitously contained the app signature checking code, and he recompiled a patch for the OS which stopped the checking. That also enabled unsigned apps to run without a time limit, etc. Symbian was a pretty secure OS… the back doors turned out to be via antivirus tools and restoring a payload planted in the virus repository which gave the attacker root privileges… 10/10 for really clever 
To add: this probably explains why the above methods don’t work anymore. It also turns out my T705 is v5. So the best bet for JeppTC seems to be an old Ipad… or someone spending more time on it, like doing a fresh root of android 4 or 5 with Xposed and then installing the Rootcloak module. I don’t want to spend more time on it since I have other routes and don’t want to re-flash and re-root my tablet since it has a load of nicely working apps on it.
I also think that a modern 64-bit tablet (android or ios) will make a good enough (fast enough) PDF reader.
I wonder if there are any apps on Android at all which allow the use of the Jepview subscription?
So far, I see only Garmin Pilot which has an Android version, all the others don’t. Can the Jeppview subscription be used with it? Or do Flitecharts do the same for VFR?
For the moment, it’s gonna be back to paper for me…. real disappointment and a huge step back. Is Jeppesen kind of owned by Apple these days or what is this ridiculous monopoly?
Mooney_Driver wrote:
So far, I see only Garmin Pilot which has an Android version, all the others don’t. Can the Jeppview subscription be used with it?
No. Garmin Pilot on Android cannot use Jeppesen charts. My/our understanding is that this is a Jeppesen limitation.
Finally magaged to sort this out.
Deleted all the data, had to re-insert the serial and user name. Then it thought it is a new device so had to call Jeppesen to free the license. Now it works again (for now).
lionel wrote:
Garmin Pilot on Android cannot use Jeppesen charts. My/our understanding is that this is a Jeppesen limitation.
Ok, I had more or less decided on GP for Android, so that option is dead as well.
