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- EZBoard - EEPROM, TMC Driver Settings, and Acceleration
- EZBoard - FAQ
- EZBoard - Installation Guide & Firmware Info
- EZBoard - Lite V1.X - BTT TFT35-E3 Wiring and Firmware Setup
- EZBoard - Lite V1.x - EZABL Not Triggering Fix
- EZBoard - Lite V1.X – Why do you use the TMC 2208 Instead of TMC 2209 Drivers?
- EZBoard – Flashing Firmware MicroSD Recommendations
- Setting up VSCode to Compile EZBoard Firmware - Local Compile
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- EZPi - Changing/Setting Wifi Network
- EZPi - Disabling Arc Welder Automatic Processing
- EZPi - EEPROM Marlin Editor Plugin Update
- EZPi - Getting Started Documentation
- EZPi - Image Download (All Versions)
- EZPi - Static IP, Hostname, & Camera Options
- EZPi - Updates or Plugins Not Installing
- EZPi - Upgrading PIP
- EZPi – EEPROM datasize error
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- Bowden Fitting Clips for Tough Extruder Fittings
- Creality Extruder Motor Shaft Lengths
- Heatbreak Installation Information
- PTFE Heatbreak Installation Directions
- TH3D Ender 5 Plus ABS Tough Extruder Bracket Assembly
- Tough Extruder Firmware Settings
- Tough Extruder or E3D Titan Assembly Video
- Upgraded Aluminum Extruder Installation Video (V2)
- Using your All Metal Hotend
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- Applying Vision Miner Nano Polymer
- Older EZABL Kits (V1/V2/V3/V3.1)
- Power Blocker Connection Troubleshooting
- PTFE Safety Precautions – ALL PTFE & ToughTube
- Raspberry Pi Direct Wire Power Adapter – How to connect
- TH3D High Amp 12V/24V MOSFET V2 Installation Information and Mounts
- TH3D Solid Bed Mounts Installation Information
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- Creality Dual Extrusion Board Firmware | V2.X Board
- Creality Mega 2560 Board Connections (CR-10S/Dual Board)
- Creality Melzi Board Connections (CR-10/Ender 3/Ender 5)
- Creality V2.0/V2.1/V2.2 Board – Atmel 2560 ICSP Programming Header Pinout
- Creality V4.2.2 & V4.2.7 Board BL Touch Wiring Options
- Creality V4.2.X Board Driver Codes
- Creality V4.2.X TMC Boards - Recommended VREF
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- Creality CR-10 V2 Firmware | V2.5.2 Board
- Creality CR-10/Mini/S4/S5 Firmware | Melzi Board
- Creality CR-10S Pro (V1/V2) Firmware | V2.4 Board
- Creality CR-10S/Mini/S4/S5 Firmware | V2.X Board
- Creality CR-20 Firmware | V2.X Board
- Creality CRX Firmware | V2.X Board
- Creality Dual Extrusion Board Firmware | V2.X Board
- Creality Ender 2 Firmware | Melzi Board
- Creality Ender 3 MAX Firmware | V4.2.X Board
- Creality Ender 3 V2 Firmware | V4.2.X Board
- Creality Ender 3/3 Pro Firmware | Melzi Board
- Creality Ender 3/3 Pro Firmware | SKR E3 Mini Board
- Creality Ender 3/3 Pro Firmware | V4.2.X Board
- Creality Ender 5 Plus Firmware | V2.X Board
- Creality Ender 5/5 Pro Firmware | Melzi Board
- Creality Ender 5/5 Pro Firmware | SKR E3 Mini Board
- Creality Ender 5/5 Pro Firmware | V4.2.X Board
- Creality Ender 6 Firmware | V4.3.X Board
- EZBoard Lite Board Firmware
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- Audew JC-48A Humidor Trays
- Bowden Fitting Clips for Tough Extruder Fittings
- Ender 3 Dual Z Kit PSU Relocation STL Links
- EZABL Probe Mounts - Where to download them
- EZOut Filament Sensor Mount for Wanhao Duplicator i3
- TH3D 40MM Fan Grill
- TH3D Ender 5 Plus ABS Tough Extruder Bracket Assembly
- TH3D Solid Bed Mount Camera Arm STL Files
- TH3D Uno Bootloader Kit Case
- X Gantry Leveling/Alignment Blocks
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- 3D Printer Help Guide Creality & Others
- ABL Z Offset, Gantry Leveling, Babystepping, Storing Offset to EEPROM
- Creality V4.2.X Board Driver Codes
- Creality X Gantry Re-work
- Printer Bed Sizing Chart
- Printer Homing Types | Home Positions Explained | Min/Max/ABL Probes
- Removing Stress Marks from Printed Parts
- SKR E3 Mini, SKR E3 Turbo, Creality V4.2.2, and V4.2.7 LCD EMI Issue
- Testing and Checking your Stepper Motors
- Thermistor Values for Unified 2 Firmware
- Tips for Printing ABS Successfully with your 3D Printer
- What board is in my Ender 3D printer? | Ender 3/5
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- AnyCubic Mega Zero V1 Heated Bed Upgrade DIY Info
- CR-10S V2.0/V2.1 Temperature Repair
- Creality Press-Fit Extruder Gear Removal
- Dual Extrusion Setup Information
- EZABL Duet Board Setup Information
- Filament Handling and Drying
- Linear Advance Information for Marlin Based Firmware
- P.I.D. Bed Calibration Guide
- P.I.D. Hotend Calibration Guide
- Re-wiring 2 Pin Fan Connectors - Video
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- Arduino IDE - Mac OS X Setup Guide
- Pronterface - Using Pronterface to send GCode to your Printer
- Simplify3D - Not Connecting to Printer over USB
- Slicers - Starting Gcode Locations - EZABL
- VSCode - "No such file or directory" Error
- VSCode - Manually Selecting your Upload (COM) Port
- VSCode - PlatformIO Toolbar Missing - How to Fix
- VSCode - Problems & Terminal Tabs
- VSCode - Setup Guide for Unified 2 and Marlin 2 Firmware
- VSCode - Unified 2 Tips for Noobs (Video)
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- 3D Printer Help Guide Creality & Others
- Babystepping with GCode Commands
- CR-10(S) Setup and Mechanical Checks
- Extruder Motor will not Turn
- EZFlex/EZMat/EZPei – Adhesion Tips and Tricks
- Fan Stuck 100% or Not Coming On - Layer Fan or other Fan
- Filament Handling and Drying
- Flashing Firmware with an Uno – Useful if your printer USB port is bad
- Printer Grounding – How to Check your PSU and Grounding Your Bed
- Sensors and Gantry Grounding
- Setting your ZOffset (Video)
- Temp Reading High, MAXTEMP Error, or LCD Blank
- Testing and Checking your Stepper Motors
- Testing your SD Card for errors
- Using your All Metal Hotend
- Y Layer Shifting on Your Printer
- Z Axis Troubleshooting
- Zits or Blobs On My Prints
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- Creality BL Touch Probe Mount Offsets (Metal Bracket)
- Creality CR-10 and CR-10S Models – What Printer do you have?
- Creality CRX – EZABL, EZOut, and Firmware Videos
- Creality Ender 3 & Ender 3 Pro - Upgrades, Information, and Tips
- Ender 3 V2 - Swapping to the 12864 Creality LCD for more features
- Ender 5 Plus Upgrade Paths – EZABL, EZBoard, LCD Kit
- Unified Firmware Wanhao Duplicator i3 Plus Information
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- AC Bed Wiring with a SSR for Control
- BL Touch Wiring Harness Colors – Antclabs vs BigTreeTech (BTT)
- BL Touch Wiring Harness Colors – Antclabs vs Creality
- Creality CR-10 V2/V3 Breakout Board Pinout
- Creality Mega 2560 Board Connections (CR-10S/Dual Board)
- Creality Melzi Board Connections (CR-10/Ender 3/Ender 5)
- Creality V2.0/V2.1/V2.2 Board – Atmel 2560 ICSP Programming Header Pinout
- Creality V4.2.2 & V4.2.7 Board BL Touch Wiring Options
- EZABL PSU 12V/24V Power Wiring
- EZABL SKR 1.4/1.4T Connection
- How to use our Fan Quick Connectors (UY Style)
- MKS Gen L Board Connections
- MKS SGen L V2 Wiring/Pinouts
- TH3D High Amp 12V/24V MOSFET V2 Installation Information and Mounts
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Do you have an Ender 5/5 Pro with the SKR E3 Mini board and want a stable firmware with the latest features?
NOTICE: This firmware is provided AS-IS and is NOT included under the technical support provided with any TH3D products, support is limited to the product itself. The BigTreeTech SKR E3 Mini is not a product we sell or recommend. This firmware is put out to help out users who have these boards that are difficult to use. If you need help you can post in the TH3D Communities for assistance.
Is the SKR too complicated? If you are looking for a board from us with technical support and a web based firmware setup check out our EZBoard for a high quality and easy to use board for your Ender. Our EZBoard has a full web configuration tool that requires ZERO coding experience or setting up of VSCode on your computer.
Download
Supports our EZABL Pro Auto Bed Leveling Kit – sensor mount STL file included in download.
Boards V1.0, V1.2, and V2.0 supported in this firmware.
Installation Directions
1 – Printer Board Firmware Update
1.a – Setup VSCode with our installation guide
1.b –Download the firmware
1.c –Extract the files to a folder on your computer
1.d –Open the folder labeled “Firmware” in VSCode

1.e –Open the Configuration.h file that is located under the “Marlin” folder on the left side of the VSCode screen

1.f – In the Configuration.h file, uncomment (remove the 2 / in front of #define) the ENDER5_SKR_E3_MINI line, the line for your board version, any other options you are going to use in the firmware
1.g – Click the ✓ at the bottom of VSCode to compile the firmware. The firmware will compile. This may take 1-5 minutes depending on the speed of your computer and internet connection

1.h – On the left side of VSCode expand “.pio” and “build” until you see the STM32F103RC_btt folder. Right click on the STM32F103RC_btt folder and click “Reveal in File Explorer”

1.i – In the file explorer open the STM32F103RC_btt folder

1.j – Look for the latest firmware.bin file and copy that to your SD card. This SD card must be FAT32 formatted.

1.k – Power OFF your printer and Insert the SD card with the latest firmware.bin file into your printer. Turn the printer on. It will take a little longer than normal to boot up.
1.l – When the printer boots you will see the TH3D logo on your LCD. Make sure to reset your EEPROM on your printer after flashing any firmware. You can do this from your printer LCD or by sending a M502 followed by M500 with your favorite Gcode sender application.
Legal Disclaimer
THIS FIRMWARE AND ALL OTHER FILES IN THE DOWNLOAD ARE PROVIDED FREE OF CHARGE WITH NO WARRANTY OR GUARANTEE FROM TH3D STUDIO LLC. SUPPORT IS NOT INCLUDED JUST BECAUSE YOU DOWNLOADED THE FIRMWARE.
TH3D STUDIO LLC IS NOT LIABLE FOR ANY DAMAGE TO YOUR PRINTER, PERSON, OR ANY OTHER PROPERTY DUE TO USE OF THIS FIRMWARE. IF YOU DO NOT AGREE TO THESE TERMS THEN DO NOT USE THE FIRMWARE.
Changelog Information
We do not maintain a full change log for this firmware. However, you can track all changes and modifications to our firmware code on the GitHub repo for Unified 2 Firmware.