Here is how I transfer tune between versions

[zed65]

When I want to update the ecu firmware I do as follow:

Start STM32CubeProgrammer and put the ECU in boot-mode and connect.
Hit the erase all button.

cube1.png (114.31 KiB) Viewed 748 times

Open the new .hex file and program the ECU

cube2.png (71.18 KiB) Viewed 748 times

When it's all done I start TuneStudio and create a new project.

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Choose the .ini file from the same folder that the .hex file are located.

TS2.png (298.68 KiB) Viewed 748 times

When it's connected and up'n running I open and import my old tune-file from my previous project.

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TS4.png (425.6 KiB) Viewed 748 times

Reboot the ECU - Done!

[AndreyB]

Well, that should totally work as intended. Those steps should produce proper results.

Just an odd way since rusEFI console has "full chip erase" button and "manual DFU update" and well, even "automatic firmware update" and TS has automatic .ini retrieval mechanism. Well, it's just that it's broken in non-beta version thus TS Beta is currently recommended at https://github.com/rusefi/rusefi/wiki/HOWTO-create-tunerstudio-project#download-and-install

But again - your procedure with explicit manual steps should totally work and it's best if rusEFI console is broken for any reason.