Just want to ver if I got dualboot setup right

Just want to make sure I don't overwrite android.

My TV box is a Tronsmart MXIII-PLUS S812.

I DLed from https://www.androidfilehost.com/?w=files&flid=170774

LibreELEC-S8X2.arm-8.0.1-MXIII-PLUS.img.gz

I uncompressed it using 7zip.

I have burned this using Win32Image to a case10 SD using Win32Image.

Before I try this I just want to make sure I have it setup right.

Should I use the toothpick method at this point?

Sorry if this is asked ad-infinitum.

Nobody?

Heck if you want to avoid spamming the topic, feel free to PM me.

I'm just a bit hesitant because I'm afraid I might have it setup wrong and wind up wiping out android or even bricking the device.