mesa 5I20 + 7i48 (WARNING: velocity computation)

Hi

My setup is 5i20 with
1x 7I48 on P2
7i37 on P3

i have config as
loadrt hm2_pci config="firmware=hm2/5i20/SV12IM_2X7I48_72.BIT num_encoders=6 num_pwmgens=6 num_3pwmgens=0 num_stepgens=0
Linuxcnc 2.6.8


to use the 6 encoder inputs & 6 analogs out

dmesg

[ 53.174898] hm2: loading Mesa HostMot2 driver version 0.15
[ 53.180780] hm2_pci: loading Mesa AnyIO HostMot2 driver version 0.7
[ 53.180838] hm2_pci: discovered 5i20 at 0000:03:00.0
[ 53.180951] hm2_5i20.0: firmware: requesting hm2/5i20/SV12IM_2X7I48_72.BIT
[ 53.446232] hm2/hm2_5i20.0: WARNING: this firmware has Muxed Encoder v2!
[ 53.446243] hm2/hm2_5i20.0: WARNING: velocity computation will be incorrect!
[ 53.446249] hm2/hm2_5i20.0: WARNING: upgrade your firmware!
[ 53.462366] hm2/hm2_5i20.0: 72 I/O Pins used:

dpkg --status hostmot2-firmware-5i20 | grep Version
Version: 0.8.21.g5be856c

Servos are works, but I do not like this warning, how to fix it?

Thats a several year old bit file

Try
freeby.mesanet.com/5I20_SV12IM_7I48.zip

everything works well, thanks