FlashFire

FlashFire app is the most popular advanced on-device firmware flasher available for rooted Android phone. It can flash complete firmware packages from various manufacturers, as well as apply over-theair (OTA) and zip updates - all without the use of original maintenance time and custom recovery.

It also provides complete device backup and functionality recovery in several formats. Relevant files can be saved to internal storage, SD card, USB connected storage or stream directly to and from your computer using USB or Wi-Fi.

It comes from the same developer who introduced Root Access Tricks for Android devices. Yes, it has successfully installed a new version of Flashfire in support of the latest Android 8.0.0 Orio firmware update from Chainfire and developer.

This is the spiritual successor to the mobile ODIN app, which was the only solution for Samsung devices in older Android versions (using a completely different method under the hood).

While this brings compatibility to Oreo, there are a few devices that run the new Oreo firmware update. Thus, not all devices were tested. You need to test it on your own device.