[Q] Upgrade to the latest unofficial firmware in Canada topic

My Moto G phone is running Android 4.4.2 Blur_Version.173.44.9.falcon_umts.Telus.en.CA which is the latest official firmware for Telus.

sbf.droid-developers.org/phone.php?device=14
has only 173.44.9 but do not have 174.44.9 for Telus.
174.44.9 is available only for Vodafone UK.
Does it mean 174.44.9 is not available for Telus in Canada yet?
I do not want to root my phone.
Is it possible to upgrade to Blur_Version.174.44.9.falcon_umts.VodafoneSL.en.GB ?
How?
If it is not possible to upgrade without rooting my phone, then I will wait for Blur_Version.174.44.9.falcon_umts.Telus.en.CA.
If the VodafoneSL version does not work well for Telus after upgrade, is it possible to revert back to
Blur_Version.173.44.9.falcon_umts.Telus.en.CA?