I was trying to install Lineage onto it, but it kept erroring. A friend of mine said he could help, and he tried, but bricked it. He said he followed a guide, but left out steps, because he thought they were not important. Now I don't have a bootloader. When I power on the device, it displays a USB logo with a white line under it for a split second, then powers off. If I connect a USB cable, it stays on for ~2 minutes before powering off again. No Windows or Linux computer detects it. Can I fix this somehow? I saw unbrick guides on XDA for similar problems, but they were only for the 550 and 551 models. Thanks in advance!