Bryan,
There is no change log for K2 firmware. Some upgrades were made to
support hardware and option additions. The last MCU version 2.04R
locked the sidetone source at U8-4 to reduce the number of support calls
saying "My K2 lost its sidetone", and did nothing else over and above
version 2.04P. If you have a K2 below SN 3000, you must do the sidetone
source wiring mod unless that has already been done with the
installation of the KIO2 or KPA100.
Upgrading the MCU also requires upgrading the KIOC (RF board U1), but
the firmware for the options can be upgraded separately.
73,
Don W3FPR
On 8/3/2020 6:33 PM, Bryan Nehl wrote:
> I'm trying to locate the change log or release notes for the various K2 firmware.
> For example: what feature/improvements are in version X of the (ATU/IO/MCU) firmware?
> Is all the firmware stand alone, or should certain versions be upgraded at the same time or not mixed?
>
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