[Fire TV Original Android Development] Donphillipe:
((((((((((( a88 88888888888 UPDATE !!!!)

While I would still like to understand the other methods of working with this AFS with a computer rather than a mouse and keyboard, I have to say that after "sleeping on the problem" I was able to load the restore the factory zip image via the regular Install option of TWRP and even though I still saw the initial complaint of

Failed to update '/vendor

At least this time it totally wiped the system and restored me to the point I could re-apply the exploit and install Magisk and then AFTV addon package again, then load Kodi and I am back on track.

Again, I'd still like to know how you use the PC to control this stick with ADB or how you issue ADB commands via any method since you have to have the OTG hooked up to get into TWRP in the first place.

---------- Post added at 01:27 AM ---------- Previous post was at 12:58 AM ----------

Keep theses components in mind as necessary, a) an OTG of some type b) a USB hub or some type of special adapter that power can be injected into. Amazon or computer stores sell a USB Hub that has a USB micro male plug with an OTG built in (this plugs into the FS). This is a handy device as the ones I looked at had an additional power cord that has the standard large USB male on one end for plugging into the powered wall outlet and on the other end it has a standard style DC power mini connector that plugs into the USB HUB to power it. The FS gets power then from the male micro USB that has the OTG built in.

Mine is a pieced together "thing" from existing parts, starting with a cheap OTG that is only hard plastic with male micro USB on one end and large female USB on the other. This micro male USB end of that OTG plugs into my fire stick and the large female USB from the OTG, I plug into it a conventional "male tail USB Male lead" hanging off the end of this very cheap 4 port USB hub. This hub is so cheap in fact it does not have the standard female mini DC jack to where I could power it with a small aux 5V transformer (power adapter for "powered hub"). So left with only the equipment on hand I have described, I took 2 USB cords I was not using, they can be anything as long as long as they have large male USB plugs on one end. I took two cords like this and cut off the USB male ends, stripped off the wires, left the yellow and green wires hanging and not connected, then soldered the two red to red and two black to black and covered in heat shrink. I then used that large USB Male/Male cable I made to inject power into my hub. So one end of the cord I made went into the wall power adapter and the other end went to any one of the 4 ports of the USB hub to "sacrifice" that port to only providing power to everything on the USB hub *AND* the fire stick. The power buss is common through a USB hub and through an OTG. Only the data is amplified (hub) and transposed (OTG), so anywhere you inject power will be cool. So in short, either supply a setup with all the approved equipment suggested elsewhere or cook-up something like I explain here if you can't wait for your online ordered item to arrive.

********* Couple of other notes when ordering USB cables to power something that needs a lot of current like the AFS, order the ones labeled "22 AWG" or "22 gauge", as they have much thicker wires for the the two power wires (red/black or violet/brown) which means you don't see a big voltage drop across the hub when the stick is being powered as well as your other equipment plugged in the hub. It's easy to over burden a lot of AC wall adapters with a couple of memory sticks, mouse, keyboard and powering the stick at the same time. For example I measured the DC volts coming out of an adapter I was using and saw the voltage bus drop from 4.82V to 4.65V when loaded with two 256GB USB memory sticks, AFS and keyboard/mouse. I plugged the apparatus I had cooked up into the stock adapter that came with the firestick and the voltage stayed between 5.1V - 5.28V. In my experience it starts boot looping pretty much under around 4.5VDC.