Unable to read firmware version

Help and support for ZUMSpot Hardware
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KD2KBU
Posts: 10
Joined: Wed Apr 11, 2018 2:48 pm

Unable to read firmware version

Post by KD2KBU » Sun Jul 14, 2019 8:00 pm

My Zumspot (Raspberry Pi Zero) is red (Instead of green) under MODES ENABLED on the dashboard.
I ran live logs during a reboot and the following came up (in part)

M: 2019-07-14 19:56:38.888 Opening the MMDVM
E: 2019-07-14 19:56:42.704 Invalid length received from the modem - 254
E: 2019-07-14 19:56:44.508 Invalid length received from the modem - 254
E: 2019-07-14 19:56:46.312 Invalid length received from the modem - 254
E: 2019-07-14 19:56:48.116 Invalid length received from the modem - 254
E: 2019-07-14 19:56:49.921 Invalid length received from the modem - 254
E: 2019-07-14 19:56:51.716 Unable to read the firmware version after six attempts

I have tried to re-flash my firmware, update and upgrade Pi-Star, all with no luck.
It won't work for me.

I would appreciate any help you can offer.

Thanks-
John

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KE0FHS
Posts: 1072
Joined: Wed Apr 11, 2018 8:40 pm
Location: Colorado, USA
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Re: Unable to read firmware version

Post by KE0FHS » Sun Jul 14, 2019 8:59 pm

If it's an authentic ZUMspot mounted via GPIO, the command you want is:

Code: Select all

sudo pistar-zumspotflash rpi
It's also worth removing the ZUMspot from the GPIO header and then reseating it, just as a double check.

The Radio/Modem Type should be: ZUMspot - Raspberry Pi Hat (GPIO).

One other thing to check, especially if you recently performed a firmware upgrade: Take a look at the frequency selected on the Configuration page. If it is highlighted red, it is in the satellite frequency range and you'll need to select a different frequency.
73, Toshen, KE0FHS
Playing with Pi-Star (unofficial notes about setting up and using Pi-Star):
https://amateurradionotes.com/pi-star.htm

KE7FNS
Posts: 422
Joined: Wed Apr 17, 2019 11:11 pm

Re: Unable to read firmware version

Post by KE7FNS » Sun Jul 14, 2019 9:54 pm

KD2KBU wrote:
Sun Jul 14, 2019 8:00 pm

I have tried to re-flash my firmware, update and upgrade Pi-Star, all with no luck.
What was the result of the reflash? Did it just fail, or did it complete?

Also, were you doing something like trying to reflash it when it quit working or did it just all the sudden one day stop?

Power it off, unplug it and turn it back on again, watch the LEDS on the ZUM board, and write down the sequence.
All views, comments, posts and opinions shared are entirely my own.

KD2KBU
Posts: 10
Joined: Wed Apr 11, 2018 2:48 pm

Re: Unable to read firmware version

Post by KD2KBU » Wed Jul 17, 2019 2:23 pm

Thank you for the suggestions.

It is an authentic Zumspot and the problem began after I tried to update (or upgrade?) the FIRMWARE for the device.
After reading up on it in some other threads, it seems like sometimes, it just takes several attempts to successfully update the FIRMWARE.

I tried a few more times, and it finally took. I am back up and running.

Again, thank you for the quick replies and suggestions. Hope to hear you on the radio!

73
John
KD2KBU

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