Android Marshmallow update for Asus ZenFone Zoom

Asus Philippines also announce the Android 6.0 Marshmallow manual update for ZenFone Zoom (ZX551ML), they also release Android M update for ZenFone Selfie has been uploaded to ASUS Support website. Here are the details:

【Version】
V4.21.40.74 (manual update)

【Model Name】
ZenFone Zoom (ZX551ML)

【Release Date】
July 1, 2016

【Download Link】
Click here to download.

To update your device, simply copy the firmware zip file to your internal storage, and reboot. Wait for the system update notification to appear.

【Release Notes】

Software update to Android 6.0 Mashmallow. Internal storage will decrease slightly after update, it is recommended back up data and relocate media files (pictures & vides) to SD card to reserve enough storage before starting the software update.
Android Marshmallow won't support APP2SD. Please move apps to internal storage before system upgrades.
Multi-user function won't be supported if the account is deleted. Please keep your account to continue usage.
The apps listed below will no longer be pre-loadeded once your device has been upgraded to Android 6.0 (Marshmallow).
1. Omlet Chat
2. Data Transfer
3. Photo Frame
4. ASUS Backup
5. Dr. Safety
6. What's Next
7. Party Link
8. Remote Link
9. PC Link
10. Yahoo Shopping
11. EZ Ding
12. TripAdvisor
13. Zinio
14. iReader
15. Dr. Eye
16. Google+
17. Puffin Browser
18. Mirror
19. Google Settings (Integrated in ASUS Settings)
Add new features and new apps:
1. Google Calendar
2. Google Messenger
3. Dr. Booster
This update will remove ASUS Email, ASUS Calendar, ASUS Messaging, and won't be preloaded in this software version. You can use GMail, Google Calendar, Google Messenger for relevant services.