: Connect your device to a powered-on computer using a high-quality USB cable. This is a critical step for many newer Samsung models to successfully trigger the recovery menu. Button Combination Press and hold the buttons simultaneously.
From here, you can use (PC software) to flash official Samsung firmware, TWRP, or custom ROMs. This is the correct "flashing mode" for Samsung.
Here is your complete guide to accessing and using this mode on a Galaxy A7 (2018), including the specific, unique steps required for this model. how to open fastboot mode on samsung galaxy a7 repack
Connect your USB cable to your computer (but do not connect it to the phone yet).
Keep holding the buttons for approximately 5 to 10 seconds until the screen completely turns off. Step 2: Establish the Hardware Link : Connect your device to a powered-on computer
Some repack firmwares map Fastboot to a button combination:
to confirm and enter Download Mode.
Your device will now reboot into the Bootloader/Fastboot interface. Alternative: Using ADB Commands
Which (Odin, Heimdall, etc.) are you planning to use for the repack? From here, you can use (PC software) to