www.asus.com/br/supportonly/ZenFone%20Max%20M1%20(ZB555KL)/HelpDesk_BIOS/Versão WW-17.00.2003.23
2020/04/131.78 GBytes
ZB555KL Android 10 Developer Image Version:WW-17.00.2003.23 For WW SKU only* (exclude JP SKU)
Improve Items：
1.Android 10 developer version is now available for downloaded.
2.This is the Android 10 AOSP version, so the user experience will be very different from Android 8 (Oreo) and 9(Pie). If you are used to Android 8 (Oreo)/Android 9 (Pie) system, we will recommend that you use the current device version.
3.Please back up your data before upgrading to Android 10. System will factory reset after upgrade process completed.
4.If you want to downgrade software to previous OS by official package, please factory reset your device after downgrade process completed.
5.Updated Android security patch
Know issue list:
*If your upgrade process has an unexpected Android Recovery issue, please refer to the QA to solve it.
www.asus.com/tw/support/FAQ/1042901Steps of Update:
1. Check software version of your device**
2. Only apply to same SKU update, Example: WW->WW, CN->CN, TW->TW, ID->ID.
3. Software update cannot transfer the software SKU and downgrade the software version.
4. Wrong SKU may cause update failure, please update the same SKU version only.
5. How to manual update firmware please refer to
www.asus.com/support/faq/1009748.
Upgrade to this firmware version, you need to using hardware reset before entering to the system.
Please refer to the following reset steps to execute the hardware reset.
www.asus.com/support/FAQ/1006346*How to know the device model?
Path: Settings->About-> Model number
Example: ASUS_X00R
**How to know the device software version?
Path: Settings->About-> software information->Build number
*System upgrade may cause part of data missing, please buckup your important data before system upgrading.
