Fipy Firmware Upgrade Error

[robert-hh]

@prasadsnayak Did you try already with low speed transfer?

[prasadsnayak]

@robert-hh : Yes, i unchecked High Speed transfer

[prasadsnayak]

@prasadsnayak :Worked!!, I did the local firmware upgrade

[prasadsnayak]

I again tried to upgrade the firmware with latest one(FiPy-1.18.0.r1.tar) with latest pycom firmware update tool but failed the flashing and throws an error "Invalid head of packet(\x00)

[robert-hh]

@prasadsnayak This liek the ones before is a transmission error, especially since some of the sections were updated properly. Did you use low speed? You could also try to use a different USB cable.

[prasadsnayak]

Also get invalid segment length message on the console while pressing reset button

[robert-hh]

@prasadsnayak That's most likely because you the upgrade was interrupted. Please try again, with a good short USB cable, at low speed.

[prasadsnayak]

@robert-hh I tried with baudrate of 59600 and i am able to do the upgrade. Many Thanks

[robert-hh]

@prasadsnayak Very good. This is still strange. The Fipy itself accepts a baud rate of 921600 Baud. The Expansion boards also work at that baud rate. Other USB/Serial bridges may only work with lower baud rates, like the ones with a ch340g chip. USB cables may also limit the speed. So there is something special in your set-up.

[prasadsnayak]

@robert-hh I forgot to mention that i also changed the USB cable, earlier i was using 30V vw-1 low voltage computer cable later changed samsung USB cable(which worked for me)

[emmecilab]

Hi all
I'm trying to update the firmware of my FiPy. I connected G23 and GND pins, removed jumpers for CTS and RTS and pressed reset button but the tool can't connect to the board.
Any help?
Thanks

[Paul Thornton]

@emmecilab I have only managed to see this when I've done something like put the module in the wrong way round or I'm using a usb cable that makes a bad physical connection. Im sure you already have but could you try removing/reseating the module in the expansion board and trying again.

Same with the USB. If its still failing. drop a ticket to support@pycom.io or pm me on here and I'll help get this sorted.