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E1550 dongle cannot change usbserial baud rate

Armen Hovhannisyan
in Beginners

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I still have problem whith E1550 3g USB dongle and orange pi one (armbian 5.14), beelink x2(armbian 5.20). Also I can connect /dev/ttyUSB(0-2) like usb-serial module, but when I try change baud rate from 9600 to 115200(or any other) get error. Don't need connect to internet: only voice call. E1550 give me 320 bayt in every 20 ms and 9600 Kbit/s don't enough. tried to change permission but no result. have any idea for solution? maybe need new kernel driver? something

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