U blox power up and power down Hex

On a Ublox I know if I send a zero period at the end of the PMREQ-0 hex message (below), I can put it to sleep permanently.

This I can do with a series of serial.writes (is there a better way?)

0xB5, 0x62, 0x02, 0x41, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x4D, 0x3B

How do I wake it up again?

The other PMEQ-1 message also seems to put it to sleep? (below). Or is it for something else?

0xB5 0x62 0x02 0x41 0x10 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x02 0x00 0x00 0x00 0xE8 0x00 0x00 0x00 0x3D 0xCB

Thanks

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