Lenovo K6 Power Oreo update can easily be done by manually flashing LineageOS 15 custom ROM. It’s an unofficial build, developed and released by XDA members, and may contain minor bugs for daily usage. So it’s up to you whether to stay in stock ROM or update Lenovo K6 Power (codenamed as Karate) to Android Oreo 8 by installing LineageOS 15.
LineageOS 15 can be installed on Lenovo K6 Power. For this, your device’s bootloader must be unlocked (if it’s there) and a custom recovery should be installed. You can flash SuperSU or compatible Magisk utility to root the device after flashing the LineageOS 15 ROM. The aforementioned steps are comparatively easy to perform. However, necessary precautions have to be taken.
As per the developer’s note, most of the essential features are working perfectly; like RIL (call, SMS, mobile data), WiFi, camera, Video/audio playback, sensors, GPS etc. However, the VoLTE feature has not been implemented yet. There’s some incompatibility with the LED blink feature too. It gets fixed through the future updates.
After flashing Oreo-based LineageOS 15 ROM on Lenovo K6/Power, it would take few minutes to boot up your device for the first time. It’s quite natural and nothing to worry about it. If your device didn’t turn on even after 30 minutes, go back to recovery and follow whole steps once again.
Lenovo K6 Power Oreo update guide via LineageOS 15 ROM has been finished. Make sure you flash GApps just after the ROM else it would cause infinite force closes during the device startup. Let us know if you had any difficulties while downloading the files or flashing the ROM on your device.