cant get mspdebug to talk to a FET430UIF with V3 firmware

Dear all,

I have two FET430UIF on my desk. One of these "accidentally" got loaded with a V3 firmware and I'm now trying to downgrade it to V2 using mspdebug (ubuntu 12.10, with mspdebug v0.22 compiled from source).

Following the "upgrade/downgrade procedure" from the FAQ, I downloaded the DLL source code from TI (slac460g.zip), patched it with Tamas Tevesz' patch, and then compiled libmsp430.so. Then I downloaded the UifV3Updater package from TI, and also obtained a V2 firmware image from my second UIF. Now I want to follow the steps of the "Downgrade procedure" itself, but I get a weird behaviour:

- flashing and running the "uifv3downgrader" often produces various error messages. Typically, they look like "Interface Communication error (error = 35)" or "No unused FET found". But if I run mspdebug as root, then sometimes it seems to work, and I get pretty much the same output as shown on the website: "Programming new firmware", "X percent done", etc. 

- however, even then, I don't get the exact same behaviour as advertised. mspdebug doesn't hang, but exits with some more tilib error messages: "Could not set device Vcc", "device initialization failed".

- and it looks like the downgrade was not successfull: when I unplug/replug the FET, it still appears as tty/ACM0, the green led is still on, and "mspdebug --usb-list" still tells me the device is a "FET430UIF (V3 firmware)". And obviously I am not able to transfer my V2 image on it.

Any idea what I'm doing wrong ?

Cheers,
-Guillaume Salagnac



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