MC7354 firmware version 6.x.x.x

Hi all,
I bought a MC7354 running firmware 05.xx.xx.xx so it not support voice call in this version. I found
(4.x.x.x: support both voice and data
5.x.x.x: Support only data
6.x.x.x: support both voice and data)
so my question is where can I download version 4.x.x.x or 6.x.x.x
Thank all

Hi @tranhoang23011997 ,
Welcome you to our community!
I have checked the Release Notes of the MC7354 module by the link below:
I only see firmware 5.x.x.x, I don’t see any firmware 4.x.x.x or 6.x.x.x, please check again.