[Fire Original Android Development] jakalman:
managed to get lineage 12.1 june onto my fire 5th gen 5.1.1

took me a while but got a latest lineage 12.1 on my gen5 fire 5.1.1

reason i wanted to do this was somehow even though my ota amazon updates had been blocked by amazon fire 5th gen supertool, somehow one got downloaded and it tried to install it every time i switched the tablet on which meant waiting over 5 minutes for it to boot up

i tried to delete the update so it wasnt there anymore, so my fire couldnt try to install it on boot, i searched and searched on how to delete it but could find no answer that worked, just couldnt find the file, anyhow

tried to use flashfire wouldnt work for me just keep saying loading and spinning circle after a 2 full days reading and messing about quite taxing as i couldnt find any answers but lots of people confused and unhappy at the state of play with these devices

decided it had to have a fresh install of 5.1.1 which i did by downloading it from the link in here https://xdaforums.com/showpost.php?p=62986665&postcount=3

after unzipping the bin file i checked the md5 checksums matched

i then put it in my adblink folder which is another adbtool

rebooted the fire into recovery by holding volume down and pressing power (from a switched off state) cleared cache and factory reset it

connected my fire usb to laptop usb and opened up my adblink folder that was on the root of my C:/

connected devices and connection status boxes should show your fire is connected might need to switch off your antivirus and firewall stuff (i find these types of programs can cause you problems when doing stuff like this)

click on adbshell it should open up a command prompt so that you can send over your original amazon firmware to your fire and type in C:\adb sideload add a space and drag and drop your firmware onto the command prompt box, it should enter the whole filename for you and if your all set up select apply update from adb on the fire and press enter in the command prompt box on pc, it should start transfering it over and install your fresh virgin amazon firmware, if you didn't delete your data it could have remembered your wifi stuff so make sure to look out for that and if it did remember your wifi shut the wifi off asap so as not to download an update, if you clear cache and factorty reset it shouldnt remember or have anything on the fire left though

now after you boot up i skipped the signing in stuff cause i was putting lineage on right away, i hooked the fire up to the laptop and started the supertool had to root first, then next i blocked updates, then entered my wifi settings on fire, then next i installed the exposed framework and flashfire from supertool

after giving flashfire root permissions

Click the Red + and choose 'Wipe'

- Ensure System data, 3rd party apps and Dalvik cache are CHECKED

- Click the Red + button and choose 'Flash ZIP/OTA'

- Navigate to and choose the latest Lineage ROM Zip

- Accept defaults

- Click the Red + button again and choose 'Flash ZIP/OTA'

- Navigate to and choose the latest Open Gapps Zip.

- Accept defaults

- Move "Wipe" to the Top of the order

- Press the big FLASH button.

- Ignore any warnings that appear

i chose the read write option for custom firmwares in both the lineage firmaware flash and for the gapps flash

the required files and open gapps arm 5.1-nano 20180608 and linage-12.1-20180602-unofficial-ford.zip

seems to be working great