I tried doing the firmware update to my SV07+ and it went completely dead.
I can’t even connect to it with PuTTy. I enter the com port and speed, click open and get the black screen. After that, nothing. No prompt for a login and every command entered isn’t recognized.
I’ve tried leaving the thumbstick in the machine, before and after powering on, for upwards of 10 minutes and still nothing.
I get the two green lights on the top of the Klipper pad, and that’s it. It’s won’t even activate the LED light.
Tomas’ Github link clearly relies on the ability to telnet into a functional OS to run the commands. I’m having a similar problem as the OP here. Unlike OP, I can telnet to the Klipper board, but I’m not getting Linux and so Tomas’ process isn’t going to work for me either.
I don’t know what base system I’m seeing here, but after a series of failed “BOOTP broadcast” attempts, it offers limited commands like RESET, BDINFO, FATINFO, GPT, FATLS, etc.
aarch64-none-linux-gnu-gcc (GNU Toolchain for the A-profile Architecture 9.2-2019.12 (arm-9.10)) 9.2.1 20191025 GNU ld (GNU Toolchain for the A-profile Architecture 9.2-2019.12 (arm-9.10)) 2.33.1.20191209