Guide: [ Ссылка ]
In this video, we will show you various methods through which you could fix the bootloop and softbrick issue on your OnePlus device.
While the first two fixes might not reset your device, but the next three will [though there's nothing that you could do to take a backup at this stage, but still it's worth pointing it out].
Moreover, if your device is in a hard brick state, then straightaway skip to the last fix i.e. MSM Download Tool.
00:00 Boot Bootlooped OnePlus to Fastboot Mode
01:41 Download Android SDK Platform Tools
01:56 Switch to Inactive Slot
07:07 Fix Corrupt Boot Partition
11:09 Format Data Partition
14:09 Flash Fastboot ROM via Fastboot Enhance
19:17 Flash OFP Firmware via MSM Download Tool
28:21 OnePlus Bootloop Fixed
