Logitech K400 Enter Key Clicks; Can't Fix Without Root

[interfect]

On the Android TV v0.3.4 image (the latest stable release), the enter key on my Logitech K400+ wireless keyboard/mouse combo is interpreted as a click. The keyboard is sending key code 28 for enter, according to a key code app I found; I guess the OS is not handling it right.

This seems to be a relatively common problem with that keyboard, and is in theory fixable by tinkering with the key mappings somewhere in /system.

Unfortunately, the image isn't rooted, and the fancy full-disk encryption that Android uses means even though the keys are in there (since the card is the only memory device in use), I can't find a way to mount the SD card on a computer to edit the mapping files.

How do I root the image to update the key mappings? And can this problem for this keyboard be fixed in the base image?

[Poincare1]

I'm having similar keyboard issues.
It seems like there's no development for over a year.
This Android release/image seems just like it was a hit and run, one-and-done. Support seems to have left the building 18 months ago.

[interfect]

Such is the way of the Android, sadly.

Next time someone tries to sell you on a software ecosystem that requires manually rebuilding for every device it is going to run on, just say no.