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🔓 Bootloader Unlock

Unlock Bootloader

Wipes everything. Samsung Knox trips permanently on unlock — no way back.

8 steps
  1. Back up all data — unlocking factory resets your device
  2. Enable Developer Options: Settings → About Phone → tap Build Number 7 times
  3. Enable OEM Unlocking in Developer Options
  4. Enable USB Debugging in Developer Options
  5. Connect to PC: adb reboot bootloader
  6. Unlock: fastboot flashing unlock (older: fastboot oem unlock)
  7. Confirm on device screen — wipe happens immediately
  8. Device reboots to stock setup wizard
🛠 Install Recovery

Install TWRP Recovery

Use the exact TWRP build for your device model number. Wrong builds can brick.

5 steps
  1. Download TWRP .img for your exact device variant from twrp.me
  2. Boot to fastboot: adb reboot bootloader
  3. Flash: fastboot flash recovery twrp.img
  4. Boot into recovery immediately: fastboot boot twrp.img
  5. In TWRP swipe to allow modifications
🛠 Install Recovery

Install OrangeFox Recovery

OrangeFox is only available for select devices.

4 steps
  1. Download OrangeFox .img for your device from orangefox.tech
  2. Boot to fastboot: adb reboot bootloader
  3. Flash: fastboot flash recovery orangefox.img
  4. Boot into recovery: fastboot boot orangefox.img
📦 Install ROM

Install LineageOS onLG G3 (Sprint)

17 steps
  1. Read through the instructions at least once before actually following them, so as to avoid any problems due to any missed steps!
  2. Make sure your computer has adb . Setup instructions can be found here .
  3. Enable USB debugging on your device.
  4. Boot your device with the stock OS at least once and check every functionality.
  5. Remove all Google accounts from your device to avoid “Factory reset protection”
  6. LineageOS is provided as-is with no warranty. While we attempt to verify everything works you are installing this at your own risk!
  7. Root your device by following this guide.
  8. Build a LineageOS installation package. The recovery will be built as part of it!
  9. Place the recovery image file on the root of /sdcard : Using adb: adb -d push <recovery_filename>.img /sdcard/<recovery_filename>.img check Tip: The file may not be named identically to what stands in this command, so adjust accordingly. You can use any method you are comfortable with. adb is univer
  10. Now, open an adb -d shell from a command prompt (on Windows) or terminal (on Linux or macOS) window. In that shell, type the following commands: su dd if=/sdcard/<recovery_filename>.img of=/dev/block/platform/msm_sdcc.1/by-name/recovery
  11. Reboot into recovery. From the same shell, type the following command: reboot recovery
  12. Build a LineageOS installation package.
  13. If you are not in recovery, reboot into recovery: With the device powered off, hold Volume Down + Power . When the LG logo appears, release both buttons and then hold them again. Then answer YES to erase all user data & restore default settings (If you have LineageOS Recovery installed it will not d
  14. Now select Factory Reset , then Format data / factory reset and continue with the formatting process. This will remove encryption and delete all files stored in the internal storage, as well as format your cache partition (if you have one).
  15. Return to the main menu.
  16. Sideload the LineageOS .zip package but do not reboot to system before you read/followed the rest of the instructions! On the device, select “Apply update”, then “Apply from ADB” to begin sideload. On the host machine, sideload the package using: adb -d sideload /path/to/zip info_outline Note: If si
  17. Click Apply update , then Apply from ADB , then run for each of those packages in sequence: adb -d sideload /path/to/zip When presented with a screen that says Signature verification failed , click Yes . It is expected as add-ons aren’t signed with LineageOS’s official key!
⚡ Root

Root with Magisk

Keep a backup of the original boot.img. Magisk is systemless — safer for updates.

7 steps
  1. Unlock bootloader first
  2. Download stock boot.img for your exact firmware build
  3. Install Magisk app on device
  4. In Magisk: Install → Select and Patch a File → pick boot.img
  5. Copy patched_boot.img to PC
  6. Flash: fastboot flash boot patched_boot.img
  7. Reboot and open Magisk to verify root
⚡ Root

Root with KernelSU

Requires kernel-level support. Not all devices are supported.

5 steps
  1. Check kernelsu.org for a supported kernel for your device
  2. Download the KernelSU kernel .img
  3. Flash: fastboot flash boot kernelsu_boot.img
  4. Install KernelSU Manager from GitHub releases
  5. Grant root from the Manager
⚡ Root

Root with APatch

Alternative to Magisk with kernel patch support.

5 steps
  1. Download APatch from github.com/bmax121/APatch
  2. Extract boot.img from your stock firmware
  3. In APatch app: patch boot.img
  4. Flash patched boot: fastboot flash boot patched_boot.img
  5. Reboot and verify in APatch Manager
🔄 Restore / Unbrick

Restore Stock / Unbrick

Always use firmware matching your exact region and model number.

7 steps
  1. Download official stock firmware for your exact model and region
  2. Samsung: use Odin — flash AP/BL/CP/CSC files
  3. Xiaomi/Poco: use MiFlash in EDL/fastboot mode
  4. Google Pixel: use Android Flash Tool at flash.android.com
  5. OnePlus: use MSM Download Tool for hard bricks
  6. Other devices: check XDA for your specific model
  7. After flash: device reboots to stock
💰 Buy & Sell

Buying & Selling Modified Devices

Unlocked bootloader = lower resale value. FRP locks are illegal to bypass on a device you don't own.

7 steps
  1. BEFORE SELLING: Factory reset and remove Google account (FRP)
  2. BEFORE SELLING: Restore stock ROM and re-lock bootloader if possible
  3. BEFORE SELLING: Disclose Knox trip status to Samsung buyers — it shows in settings
  4. BEFORE BUYING: Ask if bootloader is unlocked
  5. BEFORE BUYING: Check IMEI on imei.info — confirm not blacklisted
  6. BEFORE BUYING: Test camera, speakers, fingerprint, charging
  7. BEFORE BUYING: Verify model number matches your region