This firmware is for Sunvell Q Plus TV Box with AllWinner H6 as CPU. You can buy it from Banggood.com for a very good price.
Download Android 9 v2.1.9 stock firmware for Sunvell Q Plus TV Box from here or here. Download Android Oreo 8.1 stock firmware from here. Flash it from PC using LiveSuit v1.11 or from SD card using PhoenixCard v3.09.
Firmware details
Archive: Qplus-H6-9.0-2.1.9
Model: Sunvell Q Plus TV Box
Image file size: 824 MB
Platform: AllWinner H6
Image: Qplus-H6-9.0-2.1.9.img
Caution: Please do not update firmware unless you know what you are doing, you really want it or it is absolutely necessary. Firmware updates may occasionally have bad results, like bricking your device, temporarily or permanently. The firmware update process is done entirely at your own risk. Before attempting to update the firmware, back up your data.
OTA-update 2.1.18:
http://hwfotadown.mayitek.com/ota/root_data02_2/sunvell/SV_H6_9.0/H6-9.0-Q/en/other/2.1.18_CV200_20200703-1413/2020070314584099975.zip
Very good
Logré instalar con éxito, sin embargo el WiFi no funciona. Tienen alguna solución para eso?
Hello, please download the link for Android 9 pie operating system for greatlizard Q Plus Android 9.0 TV Box Smart TV box 4 GB RAM 64 GB Allwinner H6 Quad Core Send to my email Thank you for your attention to the Internet and your help
please send me the link or the download for this firmware to my email.