From

uboot

on my 2.4.0 board, if I run

tpi_info

followed by

env print -a

the output includes:

tpi_crc32=fd94eb53
tpi_crc_ok=y
tpi_factory_date=ffff
tpi_factory_serial=XZCT2211<xxxxx>
tpi_hdr_version=0001
tpi_hw_version=v31.31.63
tpi_mac=C4FF84<xxxxxx>
tpi_product_name=TuringPi2

... is

tpi_hw_version

being 31.31.63 corruption or a known value which was ever used? How can I permanently reset this to

2.4.0

(if that is the expected value)?