Hello there and welcome to Just Answer. My name is XXXXX XXXXX I will be assisting you today. I am an engineer with over 30 years of electrical and electronic training, repair and installation experience. I will try and answer your question accurately and precisely so that we can get you on your way.
Can you take a photo or two of the fixture? You can upload to www.imgur.com for free, no registration needed. Once you have done that, post the link here. OR you can email it to firstname.lastname@example.org marked for my attention (Steve555).
Please let me know so that we can continue.
Yes I can! I will do it right now and email the photos to the address you have provided:XXX@XXXXXX.XXX
Ok, I'll reply when they are forwarded to me. This normally takes an hour or two.
I just sent three photos.
Ok, I'll reply when I receive them.
Ok, got them.
I cannot tell the brand of the downlight but try this.
The ribbed black reflector should pull down and out of the fixture. It should be held up by two springy metal 'hooks' that hold it up there.
So put your fingers on the white bezel, your thumbs on the black ribbed reflector and try to pull it down.
Please let me know if that works so that we can continue.