UAP-AC-PRO possibly confusing install instructions

My bootloader md5 after flashing 3.7.58 on an uap ac pro is

BusyBox v1.19.4 (2017-05-08 10:00:47 PDT) built-in shell (ash)
Enter 'help' for a list of built-in commands.

BZ.v3.7.58# cat /dev/mtd0 | md5sum
df0445b99027d4286e8d8ee63d43ca4b  -

instead of 88f66a79f671383eda6512d29aa1b804 which is mentioned in the toh.

An identical device with the previous official firmware shows a different checksum, so im 100% sure that it downgraded correctly.
Can someone confirm this?

I confirmed it myself, my device works correctly and the wiki is most likely wrong.

For the Unifi ac MESH UAP-AC-M downgraded from BZ.6.0.14 the current hash for the bootloader is also different compared to wiki but it works with OpenWrt 21.02.2:

BZ.v3.7.58# cat /dev/mtd0 | md5sum
d0f1e59ea240c7cfff0d2cecc7481d0a  -