I just used iFly connect on my 740B. Kinda painful, and painfully surprised to find no airport diagrams for Colorado! Nor did I see anything suggesting any iFly firmware updates were ever available for download.
1. Comments on the above observations?
I am away from home for the holidays and don't have access to my 720 or its SD card, so can't pull up iFly Connect to follow in your footsteps. However, I would be surprised if there are no airport diagrams. I would suggest you review the list of download options again.
2. Where can I see what the latest firmware versions are?
I feel your pain, here. It's always been harder-than-it-should-be to find the latest production software version for iFly. However, if I recall correctly, one of the options at the top of the download list should be "Software" or "Firmware" or "Software update" or something intuitive like that. If you make sure that box is checked, then you will get the latest software version. If you have it checked and you don't see a software download at the start of the process, then you must already have the latest.
Note that AP announced a year or two ago that they would no longer be developing new features for the iFly Portable (7xx-series) devices, so you should not expect to see any new software for your 740b going forward. For some brief history on this topic, you can read
this post.
3. How do I update firmware?
See above.
As a closing comment, my iFly GPS usually "locks up" upon initial power up, at various stages of woke. It has also locked up mid-flight, once even as I turned downwind into a Class C airport destination. Generally 1-3 power resets will clear the problem. It has done this from the initial purchase, a year ago. Customer service said to return with a fee to be charged to fix it, and an indeterminate wait time.
I am sorry you've had that experience, but based on years of following the iFly forums, that is not a common complaint. I would guess you were just unfortunate to get a bum device.
I note the new iFly about to be offered, and some good comments. I am just worried about the "fool me twice" aspect with its purchase.
The new device (the "iFly EFB Aviation Tablet") is already available for sale, here:
https://www.iflyefb.com/STORE/Product/ifly-efb-aviation-tablet
Note that this is an Android-based tablet, and its primary benefit over other Android tablets is that AP intends to enable NMEA output to drive autopilots and other NMEA-consuming devices via a serial cable output (the iFly EFB software needs to be updated to include that capability). If you do not require NMEA output, then you could chose any Android or iOS tablet you prefer.
Several users here have begun using a ruggedized Android tablet designed for outdoor use (bright screen, tolerant of high temperatures, beefy chassis, etc.) made by Tripletek, and feedback so far has been positive. You may want to read through the later responses in this thread (this is a direct link to where the thread focus shifts to Tripletek details):
https://adventurepilot.community.fo...dventure-pilot-hardware-device.179/#post-1869
Note that neither the iFly EFB Aviation Tablet nor the Tripletek device share any hardware in common with the older 7xx-series iFly Portable devices.