I have an issue with my Samsung Galaxy A56. When attempting to perform a software update, I consistently receive a “Registration failed” error. I have ensured my internet connection is stable, restarted the device, and attempted all standard troubleshooting steps.
By restoring the device to factory settings and completing the initial setup using mobile data (instead of Wi-Fi) allowed the registration and update to proceed successfully.
I hope this information is helpful for troubleshooting similar cases in the future.
