Loading Barebox to RAM

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Hey guys,
I have a question about a way of "emergency flashing" the device.
So I have a fully operational linux system with barebox as bootloader. In production environment I have no access to the serial console but I have a USB OTG port.
For security reasons I don't want USB active in my "normal" barebox environment, so it's off by config.
For support, to gain access to a barebox and bootloader functionality is there a way to load another barebox (with usb active) from linux userspace into RAM and start/reboot into that?
Have a nice weekend!
Regards,
Patrick

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