1. download firmware - see below
2. format your Micro SDcard
3. copy firmware file to the sdcard
4. disconnect or turn off dashcam eg pull usb connector out
5. place sdcard in dashcam
6. reconnect usb or turn on dashcam
7. watch for flashing record light.
8. its completed when the dash cam reboots. takes less than a minute
9. press the reset button for 5-10 secs can't remember but it won't be damaged, to manually reset the dash cam.
10. once rebooted set the dash cam to desired settings.
11. format the sdcard in the dash cam again so it's nice and clean and ready.
12. start using the dash cam and enjoy the picture quality
get firmware from here
normally from support.viofo.com but nothing there at the moment but also here
https://viofo.com/content/61-a229-duo-support/
Firmware direct link to download here
https://viofo.com/download/firmware/A229/FWA229A.bin
it will start downloading straight away to help remove any confusion.
Firmware Update
FWA229A.bin (57.0MB)
Version: V1.2_20230413
@viofo @VIOFO-Support old site?
VIOFO Dash Cam Firmware
support.viofo.com
hope that helps you
cheers