Strange usb-mux -77 error

[notdido]

Tell us about your setup:

1. What iDevice are you using? iPhone SE 2016
2. On what version of iOS is it? 14.8
3. What version of checkra1n are you using? 0.12.4
4. What is your host system (OS version? Hackintosh? VM? etc.)? Ubuntu 21.10
5. How are you connecting to the device (USB-A? USB-C? Apple/3rd party cable? Through a USB hub?)? Apple Lighting to USB-A cable

What are the steps to reproduce the issue?

1. Open 2 instances of checkra1n GUI (in the specific situation I did it on accident)
2. Try to jailbreak, but fail misrerably with an USB-MUX error -77 and stuck in dfu mode until a hard restart ...

What do you expect, and what is happening instead? To jailbreak, but instead I get stuck in dfu mode (until I hard restart)

Did you see a popup on the device stating it entered "Safe Mode" due to an error? Well the device didnt exit dfu mode, so not really

Does the issue also occur if you tick "Safe Mode" in the checkra1n options? Yes

Any other info, error logs, screenshots, ...? Although this bug report is not really a big issue, my device is fine and etc, it doesnt hurt to be reported.