RETURN TO LIFTMASTER PLACE:
Now for the can of worms I have been promising you. Yummy, I can tell you!  Here are the exceptions to all the rules for LIftmaster remotes I have told you in the past.

61LM vs. 81LM:  In some cases, (not recommended however) you can use a 61LM in place of an 81LM remote, because the LIftmaster 81LM remotes are no longer available. BUT, you cannot use an 81LM in place of a 61LM. Go figure... I recommend if you need to program to a GREEN learn button machine, that you use an aftermarket remote called a Stinger 81LM/82LM or a keychain-sized remote called a Firefly 81LM/ or 82LM (if you have two doors). These off-brand remotes are designed to be compatible with the the no-longer made 81LM remotes, and they are very reliable.

893MAX / 890MAX / 877MAX: the MAX brothers (all right, remote control devices) are the big exception to the rules. They WILL program to the GREEN, RED/ORANGE, PURPLE, and (new)YELLOW learn button machines. They will not program to the (old)yellow, gray, or white learn buttons or any previous DIPswitch machines. They are called MAX I guess because they will program the maximum variety of different Liftmaster rolling code technologies. The good folks at www.garagedoorsupplyco.com have a great selection of these versatile bad boys.

893MAX

890MAX

877MAX

      Be sure to follow the programming instruction carefully. Here are a couple of hints that may save you from a migraine. To program any applicable machine, press the button you are programming (or the ENTER button on the keypad):
(new)YELLOW = 1X
GREEN = 2X
RED/ORANGE = 3X
PURPLE = 4X
--This sets the correct technology in the remote device so every time after that  when you push the button it will work on the first push. Woo-Hoo