Huge thanks to @beaups for the research and sourcecode and tool, @ryanbg for researching this method in the firstplace, @autonomousperson For compiling the source to a app for us all, @haggertk for his CID and aboot! Step 3: Unlock Bootloader on your device. Unlocking Bootloader is now a very simple process.You can do this by just issuing some fastboot commands.The process is same for most of the devices but there are Companies like Sony, Motorola, Huawei and other OEMs officially allow users to unlock the bootloader … A new bootloader (BLv3) is rolling out in an Android Oreo build for the Samsung Galaxy S8, S8+, and Note8 that patches the use of PrinceComsy's modded Odin. https://www.androidjungles.com/how-to-unlock-bootloader-on-samsung-phones But the OEM allows its users to unlock the bootloader in most of the regions. If the device suppports flashing unlock, set ro.oem_unlock_supported to 1. Odin files vary in size, from enormous multi-gigabyte firmware files (the main operating system for an Android phone) to small updates to other necessary systems, like the bootloader or radio. If the device doesn't support flashing unlock, set ro.oem_unlock_supported to 0. Odin has been a life saver for so many Samsung smart phones and this time it has come to the rescue again. Now long-press the Volume Up button to unlock the bootloader. https://www.theworldsbestandworst.com/2020/07/root-samsung-galaxy-a51 As this step is mandatory to root any Android phone, here you will know which Galaxy S21 Bootloader can be unlocked. Samsung Galaxy S21 Unlock Bootloader. This Samsung FRP unlock tool supports to unlock many Samsung models, like Samsung A20. Most of the time, you’ll be using Odin to flash either a stock, unmodified software image or a slightly modified one that adds tools like root access . It can be used to install firmware to a Samsung Android device. @jrkruse for innovating methods, one click apps, and MM methods @magic_man185 for recompiling the … Following this tutorial to relock the bootloader on Samsung Galaxy S10 devices will only help you to remove the unlocked bootloader message and get back the Play Protect Certification. Samsung phones also come with locked bootloader like other Android phones. How to Unlock the Bootloader on Samsung Galaxy Phones [Guide] Step 4: Ensure that the phone is detected by your PC/Mac by typing in the following command. Odin is basically a software that has been developed by Samsung. Hence, even if you lock the phone’s bootloader back, you will still not be able to use apps like Samsung Pay, Secure Folder, etc. In order to unlock the bootloader on your Galaxy A21s, turn off your phone. 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