I switched to a new employer using my EAD (with I-140 approved & I-485 (TSC) > 180 days), i called the 800 # to update my new address for the pending I-485 case.
Read how to change address:
1 file form AR11 for address change
2 update NCSC on 18003755283, your new address, provide them your EAC
or LIN # of I-485 and receipt # of any pending petitions with service
Center, provide the receipt#, your name, DOB, A#
3 write letter to service center for address change on your I-485 or
any pending petition with them provide your past and NEW address,
attach I-485 receipt copy, write your name, DOB, A# on cover letter.
Send the letter to your service center with certified return receipt
and out side the envelope write in big bold letters ATTENTION: ADDRESS
CHANGE
*** Do the all 1,2,3
However, I didn't notify them of my intention of using AC21 about the new job/new employer under VSC jurisdiction.
----- NCSC or 1-800 # has nothing to do with your AC21,
to use AC21 you have to inform USCIS service center where your I-485 is pending, send intent change letter that you have joined new employer and would like to use AC21 AND future permanent job offer letter from new employer and also attach your I-485 receipt copy write A# DOB, name, address and sign the cover letter.
But when I looked at AR11, in one of the places, it asks for "who do you work for". Can i skip that section blank and fill the rest and send it to them or if I fill AR11 with my new employer info and still not inform about AC21 to TSC, will it be a problem in the future ?
------ fill up the new employer info on AR11 as you are working with them
** read the below thread for AC21 and what you need to send to USCIS for AC21
http://www.immigrationportal.com/showthread.php?s=&threadid=121669