Correct firmware filename for Duet 2 WiFi

jay_s_uk

@lordmm this is a good page for understanding the sd card structure https://docs.duet3d.com/en/User_manual/RepRapFirmware/SD_card

droftarts

I've added a table to the firmware update page to show current firmware file names for each Duet board: https://docs.duet3d.com/en/User_manual/RepRapFirmware/Updating_firmware#firmware-file-naming

Ian

LordMM

I tried to upgrade firmware but it doesn't work.

I followed this description:
https://docs.duet3d.com/User_manual/RepRapFirmware/Updating_firmware

I use "Fallback procedure #1".
I copied the files from firmware 3.4.0 to /sys folder.

M115 says that my board runs firmware 1.21.
M997 S0 got an error: iap4e.bin not found

I found this file in github in release 1.21 ... in 3.4.0 this file exists anymore.
I tried renaming Duet2_SDiap32_WiFiEth.bin to iap4e.bin.

M997 S0 got no error anymore ... but no update occurs.
M115 says again 1.21 is runnung.

I also tried copy the iap4e.bin from 1.21 to /sys. Same result.

Where is my error?

jay_s_uk

@lordmm you can't go from 1.21 to 3.4 directly without using bossa.
You need to go from 1.21 to 2.05.1 then to 3.0 and finally to 3.4

LordMM

Ok.
What`s the prefered way for me?

Step by step or using bossa?

jay_s_uk

@lordmm as long as you've got a proper USB cable that provides both data and power (which you must have if you're using YAT to communicate with the duet), then go bossa.

LordMM

Thanks a lot.
Great and extremly fast support here.

LordMM

First i tried update from 1.21 to 2.05.1 ... no way.
Nothing happened. Tried M997 S0, tried upload through webinterface.

I tried different versions of iap4e.bin which seems to be needed.

There is no error message ... but nothing happend.

Seems the only way to update a 1.21 is bossa.

LordMM

Ok.
The way 1.21 to 2.05.1 don't works.

1.21 -> 2.01 -> 2.05.1 -> 3 works.

droftarts

@lordmm If you're on 1.21, you need to use the iap4e.bin from 1.21: https://github.com/Duet3D/RepRapFirmware/releases/tag/1.21
I recently tested updating from old firmware versions. You should be able to update from 1.21 to 2.05.1, then 3.0, then to 3.4. See https://forum.duet3d.com/post/268028

I also tested updating from 1.21 directly to 3.0, which also worked. Just make sure you have the correct 1.21 iap4e.bin version in the sys folder of the SD card.

Ian