Good article. I'm also in the process of getting control of my tablet, by building a custom ROM for it. However, it's not possible to unlock the bootloader as d

Good article. I'm also in the process of getting control of my tablet, by building a custom ROM for it. However, it's not possible to unlock the bootloader as described in the article as Lenovo has decided that it should not be that easy, so I need to take care of that first. It would have been fantastic if the tablet in the article had a locked bootloader, because I really want to learn how to unlock these bootloaders from scratch. I'm just not comfortable by downloading random binaries from questionable filelockers and loading them on my tablet, I want to know how they are produced so I can do it myself. I'm reading everything I can find, but the information on this subject is very limited and consists most of "flash these files" and absolutely no informtion how they were created. Does anyone have good resources on the process of unlocking bootloaders from scratch?