Advise users to flash stock ROM before applying an upgrade
Summary
In upgrade documentation, we should highlight that users might have to flash the last stock ROM available for their device before installing the last update.
Description
What is the current behavior?
We have a warning on the topic
What is the improved behavior?
This warning should become a specific step in the upgrade process
What does it bring?
We are sure user will not skip this step.
Examples
Validation
Edited by Romain Hunault