I am trying to flash my early access hikey board without success. I am trying to boot the board in "install bootloader" mode with pin 1-2 and 3-4 installed. The USB device is getting registered but gets disconnected. I can see others have faced similar issue but i can't find a fix for this problem
[ 6888.363849] usb 1-1.1: Product: \xffffffe3\xffffff84\xffffffb0\xffffff84\xffffffb0\xffffffe3\xffffff8c\xffffffb2\xffffff8c\xffffffb2\xffffffe3\xffffff94\xffffffb4\xffffff94\xffffffb4\xffffffe3\xffffff9c\xffffffb6\xffffff9c\xffffffb6\xffffffe3\xffffffa4\xffffffb8\xffffffa4\xffffffb8
[ 6888.363853] usb 1-1.1: Manufacturer: \xffffffe4\xffffff95\xffffff87\xffffff95\xffffff87\xffffffe4\xffffff95\xffffff8e\xffffff95\xffffff8e\xffffffe4\xffffffa5\xffffff8e\xffffffa5\xffffff8e
[ 6888.364651] option 1-1.1:1.0: GSM modem (1-port) converter detected
[ 6888.364923] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB0
[ 6888.837543] usb 1-1.1: USB disconnect, device number 11
[ 6888.837936] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[ 6888.837996] option 1-1.1:1.0: device disconnected