# RB5 adb or wifi no longer communicating

Source: https://forum.modalai.com/topic/753/rb5-adb-or-wifi-no-longer-communicating
Category: Development Drones (https://forum.modalai.com/category/44/development-drones)
Tags: rb5
Posted: 2022-02-16 21:19:29 UTC by MaxG
Replies: 3 · Views: 980

## MaxG · 2022-02-16 21:19:29 UTC

How do you unbrick or factory reset RB5?

## Reply by tom (ModalAI staff) · 2022-02-16 21:27:22 UTC

@MaxG I would first check to see whether the board is coming up in fastboot with `fastboot devices`. If not it can be forced into fastboot mode by pressing and holding the fastboot button on the M0090 add-on board and powering the RB5-Flight then releasing the button. 

If you can get fastboot up, you can then re-flash the board, following the docs here: https://docs.modalai.com/Qualcomm-Flight-RB5-system-image/#

## Reply by MaxG · 2022-02-17 13:04:23 UTC

Found the tiny button (hold for 30sec), got me into fastboot.  adb and WiFi came backup (with a little patience). Now I am back up and running.  Thank you ! :-)

## Reply by tom (ModalAI staff) · 2022-02-17 22:39:24 UTC

@MaxG Glad to hear that! Thanks for the update.