system message
The chip is SC806, the system is Android7.1.2, and the QFIL tool set is a tool for upgrading the Android system; the following are the specific upgrade steps;
1. Method 1: Upgrade using QFIL:
1. Install QDART and QPST drivers
Just take the next step along the way, fool-like installation;
2, Find the QFIL software tool
3. After entering the QFIL tool, click Configuration, then click FireHose Configuration, and then check the Reset After Download option in the dialog box that appears, and click OK; as shown below
4. Select the Flat Build option under Select Build Type;
5. Connect to the Android board through OTG, and then No Port Available becomes the word with the port number; you can also click the SelectPort... button on the right to select the available port number that your computer is connected to the Android board; if you do not connect the Android board Power off and restart, and the QFIL software tool page will reopen;
6, Load the upgrade package
7. Go back to the QFIL software, click Browse... on the Select Programmer item, select the upgrade package decompressed in the previous step, and find prog_emmc_firehose_8909_ddr.mbn, which is the file ending in .mbn;
8. Click LoadXML... After selecting rawprogram0_update.xml, patch0.xml will appear for selection; just select and confirm;
9. Turn your attention to the SC806 Android board, press and hold the FORCE_BOOT button and then press the POWER button at the same time, and then click Download in the QFIL upgrade tool 10, if there is an abnormal upgrade after clicking Download: the Android board is powered 
off , restart the Android board device, unplug the cable connected to it, and reopen the QFIL software; then re-execute step 9;
11. After the upgrade is successful, the following picture is shown: 
12. After the upgrade is completed, click to unplug the data first, and then press and hold the power button to turn it on;
