Requires

• Android Enterprise (Work Managed) with an agent 13.9.0 or later.

writeprivateprofstring SystemUpdatePolicy SystemUpdatePolicy 0|1|2|3

apply SystemUpdatePolicy

Where

• 0 is the default option and represents the device's default behavior. Use when you want to remove a system update policy.
• 1 is Automatic. The system update installs automatically as soon as an update is available
• 2 is Windowed. The system update is installed automatically when the system clock is inside the specified daily maintenance window. If the update has not been installed within 30 days, the system reverts to the default update policy.
• 3 is Postpone. The system update is postponed for 30 days. After 30 days, the system reverts to the default policy.
• apply SystemUpdatePolicy is the last line of your script.

For windowed 2, add the following commands:

writeprivateprofstring SystemUpdatePolicy StartTime minute

writeprivateprofstring SystemUpdatePolicy EndTime minute

Where

• StartTime is the start of the maintenance window.
• EndTime is the end of the maintenance window.
• minute indicates the number of minutes from midnight when the window opens or closes.

To set a freeze period, add this command: writeprivateprofstring SystemUpdatePolicy UpdateFreezePeriodCount number

Where

• number is the number of freeze periods you want to set.

Then, for each freeze period add:

writeprivateprofstring SystemUpdatePolicy UpdateFreezePeriodStartDatenumber "monthDay"

writeprivateprofstring SystemUpdatePolicy UpdateFreezePeriodEndDatenumber "monthDay"

Where

• The number in UpdateFreezePeriodStartDatenumber and UpdateFreezePeriodEndDatenumber is a number that identifies the matching start and end dates of the freeze periods.
• monthDay is the start or end of the freeze period, in the format of MM-DD. So October 19 becomes 10-19

Examples:

To postpone a system update for 30 days:

writeprivateprofstring SystemUpdatePolicy SystemUpdatePolicy 3
apply SystemUpdatePolicy

To set a maintenance window between 1 and 6 AM for system updates with a summer holiday and a winter holiday freeze period:

writeprivateprofstring SystemUpdatePolicy SystemUpdatePolicy 2
writeprivateprofstring SystemUpdatePolicy StartTime 60
writeprivateprofstring SystemUpdatePolicy EndTime 360
writeprivateprofstring SystemUpdatePolicy UpdateFreezePeriodCount 2
writeprivateprofstring SystemUpdatePolicy UpdateFreezePeriodStartDate0 "06-01"
writeprivateprofstring SystemUpdatePolicy UpdateFreezePeriodEndDate0 "09-01"
writeprivateprofstring SystemUpdatePolicy UpdateFreezePeriodStartDate1 "12-22"
writeprivateprofstring SystemUpdatePolicy UpdateFreezePeriodEndDate1 "01-07"
apply SystemUpdatePolicy