root FlashFire 0.70 Pro

FlashFire is the most advanced firmware flasher available for rooted Android devices on the device. It can flash full firmware packages from various manufacturers, as well as apply over-the-air (OTA) and ZIP updates – while maintaining the root, and without the help of a custom recovery.
FlashFire is the spiritual successor to the ODIN mobile app, which was a similar solution (using completely different methods under the hood) exclusively for Samsung devices on older Android versions.