BIGTREETECH BTT SKR MINI E3 V3.0 User Manual page 9

Firmware of motherboard
The package contains the firmware for testing (Ender3), which can be
used directly or changed according to your needs.
How to get the firmware
Contact our customer service or technical support;
Login to our website to download: https://github.com/bigtreetech
Motherboard firmware update
Copy firmware.bin file to the root directory of SD card
NOTE:
Do not change file name!
Insert the SD card into the slot, re-power on or reset, the update will complete after 10S，
And you should see the status LED blinking red during the update..
Please refer to the BTT SKR MINI E3 V3.0-PIN.pdf
for motherboard firmware DIY.
Caution
The text form and file name of firmware in the SD card cannot be
changed from "firmware.bin" .
The wiring must be done before powering on.
The LCD screen only supports the LCD12864 screen with
CR10_STOCKDISPLAY interface.
Should you have any issues, please don't hesitate to contact us. We
strive to provide you with the best quality products and services. If
you have any good comments or suggestions, please feel free to share
with us. Thank you for choosing BIGTREETECH products!