Download lightroom classic CC Version 2015.8 Camera Raw 9.8

I by accident downloaded lightroom 2017 ( latest version and did not tick “no not delete last version)

Previously had downloaded lightroom 2017 (when 1st released)

Discovered that this version froze in developer module and I need to buy a new iMac as the one I use for photo editing does not have the required graphic card.

Cannot t do that until I return from Overseas in March 2018

When I did this last time I found the latest version of Lightroom 2015 and downloaded it.

I need the latest version because One of my current camera’s Canon EOS M5 need Camera Raw 9.8 and this required Minimum version of lightroom classic CC as 2015.8

This time |I cannot find Lightroom 2015.8

Creative Cloud  latest version download is

Lightroom version:  CC 2015 [1014445]

License: Creative Cloud

Operating system: Mac OS 10

Version: 10.11 [6]

Application architecture: x64

Logical processor count: 2

Processor speed: 2.4 GHz

Built-in memory: 4,096.0 MB

Real memory available to Lightroom: 4,096.0 MB

Real memory used by Lightroom: 269.3 MB (6.5%)

Virtual memory used by Lightroom: 629.4 MB

Memory cache size: 1.0 MB

Maximum thread count used by Camera Raw: 2

Camera Raw SIMD optimization: SSE2

Displays: 1) 1680x1050

Currently running OS X El Capitan Version 10.11.6

All other application are running correctly

Lightroom works correctly for all but Canon EOS M5 imaged.     I have over 5000 to many to start converting to DNG

Also worked fine until I mad a mistake and downloaded the update

Please can you help me and ether supply a link to download the version I need or provide and alternative

I am in Perth Western Australia.

Deane Palmer