[AT&T Samsung Galaxy S 5] josemrx55:
[How-To] Download official AT&T Firmware on your PC with every browser or Bluestacks

There is a new, easier (Somewhat) method of downloading the firmwares directly to your browser, it should only have to be done once and will work all the time.

Chrome:

1) Click the menu button at the top-right corner of the Chrome browser window, point to “More tools” and select “Developer tools” in the menu. (or just Ctrl + Shift + I)

2) Click on the 3 vertical dots on the top right corner (next to the x) that show ‘Customize and Control Devtools’ and select Settings (Or just press F1)

3) In the left columm, go to the “Devices” tab

4) Click on ‘Add Custom Device’

5) In ‘Device name’ name it anyway you want

6) Skip to the ‘User agent string’ textbox (I personally didn’t changed the values above this textbox and it worked just fine)

7) Copy this text: Mozilla/5.0+(Linux;+Android+4.4.2;+SAMSUNG-SM-N900A+Build/KOT49H)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Version/4.0+Chrome/30.0.0.0+Safari/537.36

8) Next to the box, make sure ‘Mobile’ is selected.

9) Click ‘Add’ and you will be able to download the links normally.

Internet Explorer 11:

1) Search Google Chrome on google, download it and proceed to the above method

-OR-

In IE11, when you are on the "Error 403 Forbidden - You don't have permission to access the file on this server." page hit F12 > Emulation tab > User agent string dropdown: Select Custom, then paste the following string in: Mozilla/5.0+(Linux;+Android+4.4.2;+SAMSUNG-SM-N900A+Build/KOT49H)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Version/4.0+Chrome/30.0.0.0+Safari/537.36 , then hit Refresh...the download will begin

Firefox:

1) Access the about:config page by typing ‘about:config’ in the address bar and press Enter

2) You will see a warning, click on the ‘I’ll be careful’ button to proceed

3) Type useragent into the filter box, look for the ‘general.useragent.override’ string, then:

a) If it exists, which normally shouldn’t, right click it and select modify and copy the following text: Mozilla/5.0+(Linux;+Android+4.4.2;+SAMSUNG-SM-N900A+Build/KOT49H)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Version/4.0+Chrome/30.0.0.0+Safari/537.36

b) If it doesn’t exist, then create a new one by right clicking, then on the contextual menu point to ‘New’, and select ‘String’, name it ‘general.useragent.override’, click accept, then another text box will pop up with the name of ‘String value’ and copy the following text: Mozilla/5.0+(Linux;+Android+4.4.2;+SAMSUNG-SM-N900A+Build/KOT49H)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Version/4.0+Chrome/30.0.0.0+Safari/537.36

4) Done

Note (Firefox): The following process will change your default user agent, affecting the way all webpages are shown, so they will look like you were browsing them from a table or cellphone, after all the downloads you need to make I recommend you chaging back to the original user agent, by heading into about:config, right clicking on the string you just created or modified (general.useragent.override) and then clicking on ‘Reset’.

Because all of the downsides of modifying your user agent as shown above, I recommend you to download an user agent switcher extension and configure it, so that changing and reverting the user agents becomes more user-friendly.

Thanks to: Rakuu for suggesting these method and TechFA for figuring it out.

Old, longer, heavy resources method:

We will need Bluestacks but we won't have to log in or anything (unless you want to).

Steps:

1) Search Bluestacks in google.

2) Head to their webpage (bluestacks com) and download the latest version (>200 MB).

3) Install it.

4) Once it starts up, open the stock browser and copy any of the links you want from the PE3 or PF3 MM update thread (I can't post links).

5) The download will start.

6) Once it's finished, open the browser and search 'ES File Explorer apk' on google, and then download it (I downloaded it from uptodown).

7) Wait until the apk download finishes and install normally.

8) Once it's installed open it.

9) Head to the ''Downloads'' directory.

10) Hold left click on the file you downloaded until it appears as selected.

11) In the lower right corner of the app, there are some options (cut, copy, paste, etc) click on more and select ''Share''

12) In the ''Share'' tab select ''Copy to Windows'' (should be the first option with the windows 8 logo), and wait until a prompt where you select where do you want your files to go, and click accept.

13) Done :good: (don't forget to change the file extension from .bin to .zip).

There is another method which implies you logging in, creating a Bluestacks account, etc that will allow you to download es file explorer from the playstore but it didn't work for me because of some authorization issues and it also takes a lot of time.