johnp wrote:I would suggest an upgrade to 1.5.6.5 if you don't have too much customization on you 1.5.4 .....
... and if so, then, at best download this updated, but otherways 'virgin' 1.5.6.5_rc Release,
still equipped with the 1.5.6.4-type non-responsive OC Theme.
https://github.com/IP-CAM/Opencart-1.5. ... se-Version
You could then get a responsive Theme, one like shown here, i.E. the
OC Bootstrap Pro - Bootstrap 3 theme with options:
https://www.opencart.com/index.php?rout ... _license=0
JohnP's favoured OC v.1.5.6.x Bootstrap Theme Extension,

, to have it fully responsive as well,
including a bunch of very useful free Mods.
---
The OC Download linked has been updated already, to fix some
(int) - security related finding,
and it contains a
system/library/encryption.php file, able to handle up to PHP v.7.4.11 so far.
---
And if you like the most efficient 1.5.6.x VqMod-Version ever created,
MaxD's unique
VqMod PRO 2.6.1
works perfect with this Version. In contrary to 'regular' VqMod, it creates the whole bunch of
cached vqmodded Files, instead of waiting, until some Routine, to be modified, is called on
some Page the first time. This way, It saves overall (first) loading time on not yet called pages
too, in addition to so find potential Code-Problems or Misses in VqMods, before they ACT in real.
And it only presents a minor Error message, if it's own cache-clear function 'timewise' collides
with similar maual functions/operations from VqMod Editors and so ..., but only once in a while,
probably just to demonstrate, that it works ....
--
Can be downloaded momentarely here from not yet blocked IP-Numbers ...
http://www.ipc.li/os/vqmodpro.zip
---
More info about it here:
viewtopic.php?f=183&t=160997
---
Also download something like this, it add's very much to
Admin Access Security:
https://www.opencart.com/index.php?rout ... n_id=21371
---
cache remove One of the free Admin Tools , to clean out Cache manually:
https://www.opencart.com/index.php?rout ... n_id=18823
---
And please use this highly efficient
DB Cache System:
https://www.opencart.com/index.php?rout ... n_id=25388
---
301 Redirect Pages For OpenCart to re-link Intruder Attempts to Hell for good...
on my Sites, to Las Vegas
https://www.opencart.com/index.php?rout ... n_id=25864
---
and one of those, to
compress your Output Content:
https://www.opencart.com/index.php?rout ... n_id=25615
https://www.opencart.com/index.php?rout ... n_id=36607
---
and check here, to find another great little speed-up-Gizmo, beeing part of all my Test Installs, It
caches Category Counting very efficiently:
viewtopic.php?t=203186
---
and you're quite ready, to have, what it takes, to compete with a very efficient OpenCart Instument.
All it then still takes, is to rewrite some
config.php Links, and some
links in the Theme
Header File, to make your Images, CSS Styles and Scripts 'cookiefree', and then you're all set, to go.
Find some infos on this somewhere here, I forgot, where it's placed, just search for it ...
Good Luck
Ernie