After generating the list of tasks to execute, Fastboot will try and optimize the flashing of the dynamic partitions by constructing an optimized flash super task. Fastboot will explicitly pattern match the following commands and try and concatenate it into this task. (doing so will allow us to avoid the reboot into userspace fastbootd which takes significant time) //Optimizable Block reboot fastboot update-super ---> generate optimized flash super task $FOR EACH {dynamic partition} flash {dynamic partition}