Backup/dump kernel image (and full ROM) without root for Mediatek Devices

I would like to pull the boot image of my device Pipo N7. I don't have root. I found the following link: Backup/dump kernel image without root or twrp/cwm ` But when I try to find /dev -name 'by-name' 2>/dev/null I can't get it to work it seems I need root. Is there any other way to get the boot image pulled without root? P.S. I would have commented on that link but I'm not allowed to since I don't have enough reputation.