Help, the firmware can not be updated

Phaedrux

Can you check the SD card on a computer and verify that DuetWifiFirmware.bin is present in the sys folder?

Dougal1957

it may also help if we knew what firmware you are starting from and what you are upgrading to I suspect you will first need to upload the latest Iap4E file.

dc42

Copy the latest iap4e.bin into the /sys folder on the SD card, if you don't already have a recent version.
If that doesn't fix it, you are probably upgrading from firmware 1.20 or earlier. You probably have a file Duet2CombinedFirmware.bin on the SD card. Rename it to DuetWiFiFirmware.bin and run M997 again. See https://duet3d.dozuki.com/Wiki/Installing_and_Updating_Firmware#Section_Upgrading_a_Duet_2_WiFi_or_Ethernet_to_firmware_1_21_or_later_from_1_20_or_earlier.

DB-Cooper

DB-Cooper

Maybe my version is too old, how to use iap4e,

dc42

You can download iap4e.bin from https://github.com/dc42/RepRapFirmware/releases/download/2.02RC3/iap4e.bin and copy it into the /sys folder of your SD card.

DB-Cooper

@dc42 ok,thank you ！！My printer is working now. I want to know how to fine-tune the feed volume of the extruder. Now the error is 1.5 mm per 200 mm.

dc42

@db-cooper said in Help, the firmware can not be updated:

@dc42 ok,thank you ！！My printer is working now. I want to know how to fine-tune the feed volume of the extruder. Now the error is 1.5 mm per 200 mm.

Increase or decrease the extruder steps/mm in the M92 command, by +0.75% or -0.75% depending on the sign of the error.