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How to Fix Bootloop — Asus Zenfone Selfie ZD551KL
How to Fix Bootloop — Asus Zenfone Selfie ZD551KL
The Asus Zenfone Selfie ZD551KL is a 2015 Android 5.0 smartphone powered by the Qualcomm MSM8939 Snapdragon 615 (28 nm) with 2GB | 3GB and 16GB | 32GB internal storage. It features a 5.5", IPS LCD, 1080.0x1920.0 display and is available in Pure White, Chic Pink, Aqua Blue.
The Zenfone Selfie ZD551KL is equipped with a Li-Po 3000 mAh, removable, a 13 MP, 1080p@30fps main camera, a 13 MP, 1080p@30fps front camera. The device uses a Dual SIM (Micro-SIM, dual stand-by) configuration. It weighs 170 g.
A bootloop on the Asus Zenfone Selfie ZD551KL occurs when the device repeatedly restarts without fully loading Android. This is commonly caused by a failed software update, corrupted system files, or an incompatible app. Most bootloops can be resolved without losing data by clearing the cache partition first before attempting a factory reset.
Factory reset may be needed as a last resort — erases all data.
On your Asus Zenfone Selfie ZD551KL: force restart: hold Power for 15–30 seconds
If still looping: enter Recovery Mode
Navigate to 'Wipe cache partition' → confirm → reboot
If still looping: return to Recovery
Select 'Wipe data/factory reset' → confirm (erases all data)
Last resort: use your manufacturer's PC tool to reinstall firmware
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