Normally, yes. However, something on that page concerns me:
"Jessie and Stretch backports of Firefox release and beta are gone because of the requirement of rust to build them, which is not available in Jessie or Stretch. Please update your apt sources to use Firefox ESR instead."
I'm not sure how that Rust requirement and ESR 59 will play together; I'll assume they won't play together very well.
"Jessie and Stretch backports of Firefox release and beta are gone because of the requirement of rust to build them, which is not available in Jessie or Stretch. Please update your apt sources to use Firefox ESR instead."
I'm not sure how that Rust requirement and ESR 59 will play together; I'll assume they won't play together very well.