thanks to @CraftingJuu for providing the device

Rom

Android

official A9

Viper OS 6.7 EOL

• XDA
• Download

unofficial A9

Lineage OS 16.0

• XDA
• Download
• Download opengapps

official A8.1

AOSP Extended 5.8 EOL

• XDA
• Download

official A7.1.2

Lineage OS 14.1 Micro G

• Download

/e/ OS 0.17 EOL

• Documentation
• Download

Lineage OS 14.1 EOL

• XDA
• Download

Mokee 71.2 EOL

• Download

unOFFICIAL A7.1.2

Lineage OS 14.1

• XDA
• Download

unofficial A7.1.2

Lineage OS 14.1 Substratum/MicroG

• XDA
• Download

XenonHD

• XDA
• Download
• built by me

Linux

Postmarket OS

• Documentation

Kernel

A7, 8, 9

Cerberus Kernel EOL

• XDA
• Download

Recovery

TWRP 3.6.2_9

• XDA
• Download

Building

Guides

A7.1

• XDA

A8.1

• XDA (dead)

A9

• XDA
• XDA
• XDA
• XDA
• XDA
• XDA
• XDA
• XDA (latest)

local manifests

• Github
• Github