I just upgraded from Pie 0.13 to Q 0.14 successfully. For me it run as easy as a normal Pie version upgrade. Here was my very simple procedure all on FP2 :
- Download the build
- move the .zip to the SD card
- stop the phone
- Press poweroff button and volume up to start in recovery mode
- Backup the system to the SD card
- Click install and swipe
- Wait ~5min
- The phone restarts and you have android 10
- All apps and data are still there!
Prerequisites:
- TWRP 3.2.3.0 tested
- No adb fastboot required
- SD card with >4GB free
- Battery level >50% and/or phone plugged.