upgrade onprem codec plus ce9.13 to RoomOS 11.5

[jaheshkhan]

we would like to upgrade on prem cisco webex codec plus from ce 9.13 (ce 9.13.0 990355df13a 2020-06-12) to stable version RoomOS 11.5.2. 

but i cannot see what upgrade path has to follow for this upgrade?

Can Any one help in this regard?
I would like to upgrade it from codec GUI and not from CUCM .

[b.winter]

Everything you probably need to know is stated in the release notes of the target version:
https://roomos.cisco.com/print/WhatsNew/ReleaseNotesRoomOS_11#upgrading-software-on-a-cisco-room-device

And the release notes for RoomOS 10 states the following:
https://roomos.cisco.com/print/WhatsNew/ReleaseNotesRoomOS_10

[jaheshkhan]

my question is that what is the path in this case.

do i need to upgrade as below:
ce 9.13 > 9.15.6 > 10.19 > 11.5.2

or can I go
ce 9.13 >  11.5.2

or 

ce 9.13 > 9.15.6 >  11.5.2

[b.winter]

Have you read what I posted? Doesn't seem so...
From CE 9 --> RoomOS 10 --> RoomOS 11

[natalie.bennett]

do i need to upgrade as below:
ce 9.13 > 9.15.6 > 10.19 > 11.5.2

From memory, you need to go to 11.1.xx first before 11.5.2.4.  But the rest should be okay.

[Ibrahim AlQumairi]

To obtain comprehensive information about the upgrading process and pathway, please refer to the release notes for the target version (RoomOS 11.5.2.). All necessary details, as highlighted by @b.winter, can be found there.