[Samsung Galaxy S10 Questions & Answers] GuestK00136:
Firmware Instructions

NOTICE (PLEASE READ):

Credit to [MENTION=3163377]iBowToAndroid[/MENTION] for the FIRMWARE.

By following these steps, you:

A.) Take sole responsibility for your actions in the event of device failure (e.g., software and/or hardware).

B.) Possess a good understanding of the Windows operating system, the MEGA website, extraction utilities (RAR/7Zip), the installation and use of Odin, Samsung Recovery and its subsequent key combinations and the key combinations required to hard reset your Device or ENTER/EXIT 'Download Mode'. If you do NOT, you will take the necessary steps to familiarize yourself by using XDA SEARCHES and cite your references before requesting assistance.

REQUIREMENTS:

Samsung Android USB Driver:

https://developer.samsung.com/galaxy/others/android-usb-driver-for-windows

Odin:

https://mega.nz/#F!hopmzKIZ!aliq8FsaeK4R8TNb-gJcSw

Carrier Branded Firmware:

https://mega.nz/#F!NpxAHaYI!GuN4tvRtDRjesRwTK7w4kA

USB Type-C Cable

STEPS:

0.) Download and extract both Odin and the AT&T firmware on your PC.

1.) Back-up both your device and your MicroSD card (should you have one inserted).

2.) Remove both SIM and MicroSD card.

3.) Perform a 'Factory Data Reset'

(Settings > General Management > Reset > Factory Data Reset)

4.) After the 'Factory Data Reset' is fully complete, your Device will restart. This is expected behavior.

5.) After the restart, you will be greeted with a 'Let's Go!' page and a prompt to select a language.

6.) Power off the Device.

7.) With the Device powered off, hold down the BIXBY BUTTON and the VOLUME DOWN KEY at the same time.

8.) While still holding down the BIXBY BUTTON and the VOLUME DOWN KEY, press and hold the POWER BUTTON.

9.) When done correctly, you will be greeted with a teal colored screen that reads the following:

'Warning

A custom OS can cause critical problems in phone and installed applications.'

10.) Press the VOLUME UP KEY to enter 'Download Mode'.

11.) Go to the folder where you downloaded and extracted Odin.

12.) Locate and open 'Odin3 v3.13.1.exe'

13.) Click on the BL button. Locate and select the following file:

BL_G973U1UEU1ASBA_CL15445662_QB22243195_REV00_user_low_ship_MULTI_CERT.tar

14.) Click on the AP button. Locate and select the following file:

AP_G973U1UEU1ASBA_CL15445662_QB22243195_REV00_user_low_ship_MULTI_CERT_meta_OS9.tar

15.) Click on the CP button. Locate and select the following file:

CP_G973U1UEU1ASBA_CP12017446_CL15445662_QB22243195_REV00_user_low_ship_MULTI_CERT.tar

16.) Click on the CSC button. Locate and select the following file:

CSC_OMC_OYM_G973U1OYM1ASBA_CL15445662_QB22243195_REV00_user_low_ship_MULTI_CERT.tar.md5

17.) Connect your Device using a USB Type-C cable.

18.) If you've followed all these steps correctly, it will look exactly like '1 - Odin Example.jpg'.

19.) Click on START.

20.) In the top left corner of ODIN, you will see a GREEN progress bar. On your device, you will see a WHITE progress bar.

NOTE: This is normal. New firmware is now being installed.

21.) When the firmware is successfully installed, your Device will restart.

NOTE: Before or after restart, you may or may not see a reference to 'Installing System Update'. This is normal.

22.) After the restart, there will be a pause at the 'SAMSUNG' logo. The operating system is being initialized.

NOTE: You may also see references to 'Installing applications...'. This is normal.

23.) Upon completion, you will again be greeted with a 'Let's Go!' page and a prompt to select a language.

24.) Complete these steps but DO NOT login to your Google/WiFi/Samsung accounts yet. Do NOT insert your SIM.

25.) Skip ALL logins until you get to the 'All done!' page. We need to verify that the firmware installed properly.

26.) After the home screen launches, slide up, locate and click on 'Settings'.

27.) From 'Settings', find and click on 'About Phone'. From 'About Phone', find and click on 'Software Information'.

28.) Under 'Software Information', find 'Service provider SW ver.'.

29.) If successful, you will see 'ATT/ATT/XAA' referenced on the third line.

30.) If this is the case, power off your Device.

31.) Insert your SIM and MicroSD cards, power on the device and set up your Google/WiFi/Samsung accounts.