...
If you received a failed installer message after you click Yes or it just closing the application, there is some setting that needs to be changed on your device.
Go to Settings
Applications and Notifications
Advanced (bottom)
Special App Access
Find “Install Unknown apps”
You should see flex, select this and allow from this source
Then go back to step 2 again
Once you have changed this for the first time, all future auto-upgrades will be fine.
Andriod Version to use Flex
| Note |
|---|
Android versions up to v4.4 (KitKat) were supported until VF v1.10 was released, then Android v4.4 (KitKat - released late 2013) became the minimum supported version. |