Just before posting about all the new Fire TV software updates yesterday, I sent rbox the update packages that I captured and he has made quick work of releasing new pre-rooted ROMs of these updates. As always, download the ROMs from rbox’s XDA threads here: Fire TV 1, Fire TV 2, and Fire TV Stick 1. Please consider donating to rbox if you use his ROMs, so that he can continue releasing future updates for rooted Fire TVs and Fire TV Sticks. If you’re still in a giving mood after that, I’d greatly appreciate your support through Patreon.
For the first generation Fire TV and Fire TV Stick, these new ROMs are using the 18.104.22.168 (Build 573210720) software version. For the Fire TV 2, the new ROM is using the 22.214.171.124 (Build 574263120) software version.
Pre-rooted ROMs allow those with rooted devices, who have blocked software updates, to update to the latest software version without loosing root. If your device is not already rooted, you cannot use these pre-rooted ROMs to root. Without these pre-rooted ROMs, a rooted Fire TV or Fire TV Stick owner would have to stay on older software versions until a new rooting method was discovered for future updates.
To install these ROMs, your Fire TV or Fire TV Stick must already be rooted and have TWRP custom recovery installed. To see if your device’s current software version can be rooted, and for instructions on how to do so, see my rooting starters guide. If your device is rooted with TWRP installed, follow these instructions to install the new pre-rooted ROM. Those of you with a Fire TV Stick 1 may need to refer to this guide to be reminded how to get into and control TWRP using a PC.