Why are there no guides for the Late 2011 17" MacBook Pro A1297 (2.4GHz i7 quad core, MD311LL/A)??? I just replaced the RAM in mine and discovered that not only is there no tab on the battery connector, but the connector pulls straight up, perpendicular to the logic board, rather than parallel. I almost ripped the wires out of the connector by trying to pull it out parallel to the logic board like this guide instructed! After finally getting it out, my advice to those with the Late 2011 model is to use a spudger to loosen the edges of the connector then lift the connector straight up to get it out safely.
Step 13 should be called "Remove Hard Drive", not "Optical Drive". The hard drive is NOT an optical drive.