i have flashed a new rom , nano gapps , a new firmware(which i think may be corrupt and have created problems),so now i see the oneplus logo for almost 500ms and then black screen appears though i can boot into fastboot mode but not into TWRP. Main problem is I don`t have enabled oem unlock from developer option as i have just flashed a new ROM.So,i just need a method to toggle oem unlock further all things can be done by me.
company OnePlus model OnePlus 2