Well I'm stuck. I applied latest firmware v1.05 per page 24 of the manual, and latest software v3.051 (I think?) per page 22 of the manual. The radio then started doing all of the CW things better. I noticed that sometimes I could not get RF output despite DRIVE being at 100. In chasing that issue down to log it as a bug, I decided to re-download firmware and software - - and now I'm stuck.
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Upon power-up, screen says the zBitx firmware v1.05 is waiting to start. I hear a small noise from the speaker about 10 seconds after boot that lasts about one second (sounds like screen writing or i2c noise).
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Firmware re-application seems to happen *very* quickly with the reboot taking just a second or two.
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The internal and external displays work fine. When I plug in the external mouse and keyboard, where they were previously working they now do not; power applies to the mouse as the LED lights up, but neither it nor the keyboard is recognized. On the external display I see the tubes background and one terminal window, but I no longer see the zBitx window similar to what is on the built-in display. I am unable to run the software update procedure on page 22 as the keyboard and mouse are not recognized. The terminal window shows 4 lines of text and ends in a prompt "pi@sbitx:~/sbitx $"
Wifi is working; I attempted to SSH into the device but do not know where to locate the password for the default user pi.
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Please direct me towards the next steps, and thank you.