Download TWRP builds for Samsung Galaxy S21, S21+, and S21 Ultra [Link] - Sammy Fans
How to put and get out SAMSUNG Galaxy S21 in recovery mode? - HardReset.info
Galaxy S21/Ultra/Plus: How to Boot Into Recovery Menu - YouTube
How to Boot the Galaxy S21 to Recovery Mode? - YouTube
How to put and get out SAMSUNG Galaxy S21 Ultra 5G in recovery mode? - HardReset.info
Woke up to my S21 Ultra (Exynos) on boot loop. Was able to get into recovery, tried wiping cache, doing a factory reset etc. No success getting this hunk of metal to
Samsung Galaxy S21/ S21 Plus /S21 FE : Enter into Recovery mode, Wipe cache partition - Android 12 - YouTube