SPI flash on 5B

Does the Radxa ROCK 5 Model B come eith an SPI flash? If so, who is the manufacturer of the chip and what is its part number?

Yes, a 16M Byte SPI flash is on ROCK 5B by default. Model number: XT25F128BWOIGT

Does this SPI flash chip have write protection capabilities?

If it has write protection capabilities, is one of them the capability to be write protected until the next power cycle?