[LG G Flex 2] khlavkalash:
Hi, I just wanted to give everyone some information to updating to 5.1.1 as many of you are probably buying these due to the recent sales. If you don't want to root but wanted the 5.1.1 update through AT&T, here is the guide. You could also try rolling the date method but it did not work for me. I actually bought a bunch of these phones for friends and family, and I've updated five of them to 5.1.1 through AT&T OTA update, and this method is very time efficient ;)

Side note: if you have more than one G Flex2 that you are looking to update, you can update them all using just one sim and swapping them between phones.

Before you begin, do a factory reset under settings if you've already pressed software update and tried rolling the date a few times to get the update. Afterward, do not press software update until you are sure that the AT&T person has pushed the update.

*If you had previously rooted your phone, you must unroot before trying the OTA update, as it will prevent it from installing.

Here are my steps (probably takes around 30 minutes):

1. Register for the gophone plan with the AT&T sim card and put the minimum $10 credit into the plan. For the IMEI, put all zeroes in. This will allow you to select the $2 monthly plan, which you ultimately won't be selecting but instead will select the $1 100mb daily package after your account and sim have been activated.

2. Turn the phone on with your newly activated gophone sim. TURN ON WIFI and keep it on WIFI until your update is downloaded, installed, and finished.

3. Directly call the gophone support line: 800.901.9878, and voice navigate your way to technical support (it's an automated system).

4. When the person picks up on customer service, ask them to put you through to advanced technical support, and if they ask what the call is for, tell them that you were disconnected while talking with an advanced technical support line as this will get you where you need to faster.

5. Ask the person on advanced technical support to push an update to your phone, and tell them that you've tried manually updating through the software update on your phone under settings numerous times. If they insist that they cannot push updates and you have to do it yourself on your phone, tell them that your friend has a G Flex2 with a gophone plan, and he/she was able to get the update pushed with a call to advanced technical support. If you think that the support person is being stubborn and not even attempting to try it, just hang up and try again.

6. Help the support person find the update that you are looking for by telling them the update is called H95011x. DO NOT get the H95011z beforehand, as it will not help you. Ask explicitly for the H95011x update. You can also read some more information from this page, which is the link to the page with the update information (edit: cannot post the link since I'm a newbie... Alternatively, you can find the software info page it if you type H95011x on google and look for the link to the site att.com)

7. Keep asking them to push update from their side, and you will know that they've pushed it when you go to the software update under settings on your phone and it says something different now. Instead of "look for update software" or something similar, it will now say, "continue with software update". When you press it, a notification will appear, saying "communication in progress". Tap on the button a few times to make sure that it keeps saying "communication in progress".

8. When you see "communication in progress", just leave the phone alone for the next hour or two, as the phone is downloading the update file without showing you any sort of progress bar. Keep the phone connected to wifi.

9. Come back and a notification will prompt you to install update and the phone will restart.

Hope this helps! I know that getting the AT&T OTA update can be a pain and I wished that I had some guide to follow when I was first trying to get the update.