Help Can this adapter help a b315 router without jumper

[sunnybear]

Hello mga idol. I have a b315s-936 router that can't do a jumper trick, di talaga nagana at di na rin makapag usb mode dahil nagkamali akong i online update siya at stuck siya ngayon sa 21.329.01.00.1006 na firmware. I was wondering kung bibilhin ko ba to baka makuha ko pa ang com port sa device manager nang makapag usb mode pa sana. Gagano ba yun?

Spoiler: USB to Com Port adapter

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o ito

Spoiler: RJ45 to USB

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[zbernardz]

Gawa ka nalang boss ng male to male usb