Bootloader versions...

[K4PWO]

I know that you have stated that the version of bootloader isn't too important but I have 5 units with three different versions.
They range from version 1.6 to version 1.8 and I believe your current is 1.9.
Just for consistency, would it be possible for me to upgrade them all to the same version?  I could not locate the bootloader "bin" for download.

73 de Perry - K4PWO

[Jan (Microbit)]

We haven't made the bootloaders available for download for the reason you mention, as well as for eliminating the risk of people upgrading it while on a too old firmware version, which could make the unit "dead". The changes made from 1.7 to 1.9 could be described as "minor", so for units that work ok it really isn't necessary to upgrade. We will take in consideration if making them available would be wise