Thanks to @Boot17 Now I'm following this way:
When I need to put checklist to all the ordered list:
Select all the list
Press blue + button
Press checkbox button
When I need to uncheck all the list:
Select all the list
Press blue + button
Press checkbox button to delete all the old checkboxes
Press blue + button
Press checkbox button to add new checkboxes to the list
In this case I basically do this; delete all the checkboxes and add again instead of uncheck them one by one. I hope it works for you too