Sunlu T3 Firmware | Update Work

uses a 32-bit ARM-based controller board (similar to a BTT SKR Mini E3 V2) . To perform the update, you need: Micro SD card (ideally 8GB or smaller). A computer to format the card and download files. 2. Download the Firmware File

The screen will remain blank for about while it updates. Do not turn off the power during this time. Sunlu T3 Firmware Update

Format it to with an allocation unit size of 4096 bytes . Clear all other files from the card. uses a 32-bit ARM-based controller board (similar to

(thermal runaway, ABL not saving). Otherwise, keep the stock firmware. If you want better features, skip official updates and go straight to Marlin custom builds (e.g., from Insanity Automation or TH3D) – they’re more reliable and add advanced options like linear advance. Format it to with an allocation unit size of 4096 bytes

exactly. If you have updated before, ensure the name is different from the previous update (e.g., firmware_v2.bin ) as the board may ignore a filename it has already "seen". Copy to SD Card file in the root directory (not inside any folders) of your formatted Micro SD card. Flash the Printer the printer. Unplug any USB cables connected to the printer.