[Verizon Galaxy Note 3 Q&A, Help & Troubleshooting] bftb0:
in the C language - the thing the Android kernel and most of the native libraries are written in:

a = b; /* assignment. set the value of a to be the contents of b */
if (a == b) dothis(); /* test for equality */
if (a != b) dothat(); /* test for inequality */

But what I was saying is that bootloader unlocked phones are functionally identical to Developer Edition phones.

. You could put the SDcard in a PC that has a media reader slot. -OR-

. An IOGear USB 3.0 SDcard adapter key/stick is pretty cheap. (USB 2.0 even cheaper.) -OR-

. TWRP (not the SafeStrap version) fully supports OTG devices and can flash/backup from/to an OTG USB storage device. A OTG cable is even cheaper than the USB SDcard adapter stick. The most expensive item is going to be a big uSD card, say 32 GB. You are going to want that; TWRP backups and Note 3 ROMs are big - 3-8 GB.

reflashing back to stock seems like the long road to doing things.

What happened to RaaidR (as reported) seems to be logically impossible. The DevEd signature modification occurs in the middle of the aboot partition (not at the end!). The only explanation for his result is either a miracle from the Pope, or more likely the flash never happened.

The DevEd owners had no "unlocking" mechanism available to them. If they overflashed their bootloaders, they instantly and semi-permanently converted their devices to retail. So if you don't want to lose your unlocked bootloader don't flash bootloader firmware!

That's exactly what it does. For Retail/Locked phones it never touches the stock boot partition. (kernel+devicetree+ramdisk). DevEd devices can use a modified boot partition though, and I suppose that's what is done in the multiboot versions of Jasmine, maybe even in the DevEd version.

I would read up a little on GPS. By itself, it typically works very poorly indoors, if at all. If aGPS (Assisted GPS) services are not available, a perfectly functioning GPS receiver can take up to 15 minutes to get it's first fix. That's because it takes that long to download the almanac and ephemeris data from the satellites, and it cant do that until it has "found" the satellites by searching through frequency offset space and coding space. Indoors, that problem is even worse because the signals are quite weak, so the problem of "finding" the satellites gets even worse. (But note: that is exactly how stand-alone GPS was designed to work).

I just put my (rooted-stock) Note 3 in Airplane Mode, and then turned WiFi back on (simulate your situation). It seems to be able to download aGPS data over WiFi only. Hopefully your will as well.

Using the "GPS Status & Toolbox" app (MobiWIA - EclipSim) while connected to your WiFi, do this:

Enable

(touch screen) -> Menu -> Settings -> Display & Tools -> Show time to GPS fix

Enable

(touch screen) -> Menu -> Settings -> Background behavior -> Use GPS when screen is off

Then

(touch screen) -> Menu -> Manage A-GPS state -> RESET

you should see two Toast messages appear on your screen, one after the other:

Internal GPS state cleared

GPS Assistance data downloaded

Next ... Take your phone outside where you are standing under an unobstructed sky

and wait. Keep touching the screen to keep it awake. And wait.

Do you see any satellites appear, even if there is no fix yet? If you loiter out there for 10-15 minutes do you get a GPS fix?

Since you are using the device without cell service, if you took the device someplace that is also without WiFi (for instance a car), it could literally take 10-15 minutes to get a first GPS fix. (Usually it will be faster if you download aGPS data - almanac & ephemeris before you leave your WiFi connected goodness. The ephemeris data will stay valid for an hour or so.).

After that first fix a GPS track-recording app meant for off-network usage (hiking or geocacheing apps) will have no problems maintaining a GPS fix, so long as they continue to request GPS updates. You could give the "GPS Essentials" app a try for this - in track recording mode it is constantly asking for GPS position. It can give you a "live map" view using offline maps but I don't believe turn-by-turn navigation.

===>> Don't use Google Maps for GPS testing either on-network or off. (even if you have downloaded an offline map cache). It is known to act in a bizarre fashion on some CM13 builds. This is probably because it switches back and forth between different LocationServices() data sources, and in the time intervals that GPS requests are not being made, the GPS subsystem loses lock.

Hope that helps.