Where to find older firmware

[ApplePen]

When I check the support page for my router(R4500), I don't see any additional downloads for previous firmware versions.

I've read from this forum there is supposed to be. Does anyone know the correct way to get to older firmware? I'm trying to downgrade my router to hopefully fix issues I've had.

[antinode]

> When I check the support page for my router(R4500), I don't see any
> additional downloads for previous firmware versions. [...]

   Nor do I.  But what's there is about as old as most folks would like:

$ unzip -l R4500_V1.0.0.4_1.0.3.zip
Archive:  R4500_V1.0.0.4_1.0.3.zip
  Length      Date    Time    Name
---------  ---------- -----   ----
        0  05-25-2012 03:53   R4500_V1.0.0.4_1.0.3/
  8609850  05-03-2012 15:25   R4500_V1.0.0.4_1.0.3/R4500_V1.0.0.4_1.0.3.chk
     2244  05-25-2012 03:53   R4500_V1.0.0.4_1.0.3/R4500_V1.0.0.4_1.0.3_RN.html
---------                     -------
  8612094                     3 files

   The date in the User Manual is "February 2013".

> I'm trying to downgrade my router to hopefully fix issues I've had.

   What you might really want is _newer_ firmware, which seems not to
exist in the usual place, either.  You might have picked a real
non-winner in that model.

   "issues"?

[ApplePenToo]

>Issues

I keep having to reset daily or multiple times a day. Issues never typically occur when it's just me connected. And, there's about 21 other devices that sometimes connect besides me. I didn't have any problems till a power outage ~2 years ago. 

I've tried troubleshooting and so far, I've assigned assigned every device that typically connects a static ip, and I've locked that range.

> What you might really want is _newer_ firmware, which seems not to exist in the usual place, either.

I didn't realize my router was that old. I'm pretty sure I'm using the firmware version from this site too unfortunately