Hewo, here are some of ie7 maps updated with timer entities.
Your choice if you want to update them here or keep the old ones, I have not contacted him before updating nor asked anything, the sources were available on his github. The modified source files are all included in the pk3s.

Simplicity: http://urt.li/q3ut4/ut43_simplicity.pk3
Serenity: http://urt.li/q3ut4/ut43_serenity.pk3
Volcanic: http://urt.li/q3ut4/ut43_volcanic.pk3
Gravity: http://urt.li/q3ut4/ut43_gravity.pk3