[Samsung Galaxy S10/S10+/S10 5G/E Cross Device Deve] blazethelight:
@FreeRunner2017:

How or where iam find your / Team Matrixx donate / PayPal mail address for your coffee? Alternative I am also able to send you an pm and ask. 😁

It's possible, that iam able to translate some settings into my home language (german) like search button into settings, matrix settings, settings homepage widget etc... into easy way / method, that these changes are included into next versions automatically?

PS. Thanks for the update of site one flash instructions for windows.

If you want, take this guide instructions for more clear informations, for new beginners:

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Pre-Install Instructions (unlock bootloader)​

Before following these instructions please ensure that the device is on the latest Android 12 (Samsung OEM) firmware.

Warning: The following instructions will unlock the bootloader and wipe all userdata on the device! Before unlock bootloader, create backup with Samsung smart switch! After unlocking bootloader, your warranty is void! It's your own risk! ​

Connect the device to a Wi-Fi network.

Enable Developer Options by pressing the “Build Number” option in the “Settings” app within the “About” menu

From within the Developer options menu, enable OEM unlock.

Power off the device, and boot it into download mode:

hold Volume Down + Bixby and connect USB cable to PC

Now, click the button that the onscren instructions coorelate to “Continue” and/or “Unlock Bootloader”.

Your device will reboot, you may now unplug the USB cable from your device.

The device will demand you format userdata, please follow the onscreen instructions to do so.

Run through Android Setup skipping everything you can, then connect the device to a Wi-Fi network.

Re-enable Development settings by clicking the “Build Number” option 10 times, in the “Settings” app within the “About” menu, and verify that “OEM Unlock” is still enabled in the “Developer options” menu.

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How to Fix OEM Unlock Missing on Samsung​

Sometimes, you try to unlock the bootloader and can’t do it due to OEM unlock missing. This frustrating issue can prevent you from customizing your device or installing custom ROMs.

What Is OEM Unlock?​

What is Samsung OEM unlock? OEM Unlock is a feature on Android devices that lets you unlock the bootloader. The bootloader is also called a boot manager or bootstrap loader. It’s a program that loads the operating system when you turn on your device.

Unlocking the bootloader lets you customize your device by installing custom software. However, it can also void the warranty and make your device less secure.

You can find the “OEM unlock” option in the developer settings of your Android device. However, you need to enable it before you can unlock the bootloader.

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Why Is OEM Unlock Missing?​

Why is OEM unlocking not showing? The “OEM unlock missing” on your Android device for a few reasons. One possible reason is that your device’s manufacturer has locked the bootloader. Hence, preventing users from unlocking it.

Some manufacturers do not allow users to modify their devices’ software for security or other reasons. In this case, the “OEM unlock” option will not be available in the developer options.

Another reason could be that the device is locked or the bootloader is corrupted. Thus, you will see “OEM unlock missing” on your phone.

Finally, you can see “Samsung OEM unlock missing” if your device is not correctly connected to your computer. Or if you are not logged in as an administrator on your computer.

Then, how to fix OEM unlock not showing in developer options? And how to enable OEM unlock missing with or without password? Now, let’s move to the next part.

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How to Enable OEM Unlock on Samsung​

Enabling OEM to unlock on Samsung is simple. But backing up all the data before allowing OEM to unlock is essential. Because when you unlock the bootloader, it can erase all your data. For OEM unlocking on Samsung, you need to follow the below-mentioned steps.

Go to your mobile settings and click on about phone.

Click on Software Information and look for the build number.

Tap on the build number and turn on the Developer option.

Tap on the Build Number

Perform the following steps for fast OEM unlock.

Go to your device’s “Settings” menu.

Scroll down and select “Developer options.”

Scroll down to the “OEM unlocking” option and toggle the switch to turn it on.

If prompted, enter your device’s PIN or password to confirm.

Once “OEM unlocking” is enabled, you can unlock the bootloader and customize your device.

Following these steps will enable you to OEM unlocking on your Android device. Now, let’s go ahead…

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Fix OEM Unlock Missing by Changing the Date​

This method can be helpful if you have a new mobile and OEM unlock missing Android 13/12. You just need to set an older date by setting off the automatic date. You can do all this by following the steps below.

Step 1. Go to settings on your Android device. Now go to General Management. Then go ahead to Date and Time.

Step 2. Turn off the automatic Date and Time. Now manually set the date and time at least 1-2 months before.

Turn off Automatic Date and Time

Step 3. Once you have changed the date, return to the setting and go to About Phone.

Step 4. Now head over to the software information section. Then tap on the Build number minimum of seven times.

Step 5. All this will enable the Developer mode. Now go to settings and tap on the Developer Options.

Step 6. Now it’s time to turn off the Auto Update System Option.

Turn off Auto Update System

Step 7. When all this is done, return to settings and then Software Update.

Step 8. Now turn off the “Auto Download over Wifi” option.

All these steps will enable you to fix the OEM unlock missing issue by changing the date.

Fix OEM Unlock Missing via Flash Firmware​

Sometimes, when you find OEM unlocking not showing Samsung, you can fix it by flashing firmware for different regions or flashing the same firmware. Before starting this process, it’s important to back up all the important data. Follow the steps mentioned below to fix the OEM unlock missing using flash firmware.

Step 1. Download the firmware for your device from a reliable source. For example https://samfw.com/. Downloading the firmware from the same region as your device is recommended.

Step 2. Odin Tool is software that is used to flash firmware onto Samsung devices. So download and install the latest version of Odin Tool on your computer or Mac.

Step 3. Now extract the already downloaded firmware file.

Step 4. Then in the tool, click on the BL and wait for the BL files to load. Likewise, for AP, CP, and CSC. You might have to wait for the files to load.

Click on the BL Button

Step 5. Now turn off your phone. Press and hold Vol down + Bixby key + USB cable, and enter downloading mode.

Step 6. Then connect your Samsung device to a computer using a data cable. Now “Added” message will appear in the log file.

Step 7. Now click on start and wait for completion, as it will take some time.

On completion of the success, you will receive a success message. And the phone will automatically boot into the system.

Possible OEM Lock and Samsung Knox Guard values​

OEM Lock values:

ON (L): fully locked.

ON (U): bootloader locked, OEM unlocking enabled.

OFF (U): fully unlocked.

If no OEM Lock value is shown in Download mode, your device is probably not unlockable due to market limitations (USA/Canada devices).

Possible Samsung Knox Guard values:

Active, Locked: your device has been remotely locked by your telecom operator or your insurance company.

Prenormal: your device is temporarily locked, reaching 168h of uptime should trigger unlock.

Checking, Completed, Broken: your device is unlocked.

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First time flash instructions:​

Supported device tree (for choosing your correct ROM version) ​

Only Exynos SOC (CPU) supported!

Samsung Galaxy S10e = beyond0lte

Samsung Galaxy S10 = beyond1lte

Samsung Galaxy S10+ = beyond2lte

Samsung Galaxy S10 5G = beyondx

Notes:

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• GApps are included, don't flash separately.

• You CAN'T INSTALL this ROM using TWRP or similar, this rom supports only AOSP-based recoverys (like LineageOS recovery and

recommend Matrixx recovery for OTA support

) - Please don't report bugs if you using TWRP, Magisk for root or any other mods like (for example) Xposed Framework or any Magisk modules.

• Please report bugs with logs if you found any

Flashing Instructions

Clean flash (first time install or coming from a different ROM):

• Make sure your device's bootloader is unlocked

• Power off the device and boot to download mode (Vol down + Bixby key + USB cable)

• Download the recovery image for your device (present in into Rom ZIP file)

• Rename this to recovery.img and compress it as a tar file using 7zip or easy method by https://xdaforums.com/t/how-to-convert-img-to-tar-md5-with-ease-with-odin3.2833350/

• Download Samsung Odin and open it (If the device is not recognized, make sure Samsung USB drivers are properly installed)

• Put the resultant tar file (recovery.tar) in Odin's AP slot and flash it

• At the exact moment the screen goes off, don't remove the USB cable and boot to recovery mode (Vol Up + Bixby key + Power)

• Download ROM from link for your device

• Format data, cache and system

• Flash ROM using adb sideload or SD card and reboot system

• Flash Magisk (optional but not recommend! ) for root access (most security and Google security apps does not working anymore like banking apps, Wallet etc.!)

• Format data and reboot to system (only for Magisk)

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Big thanks again for your / Team Matrixx time, hard work and this great ROM sharing for the xda community! ❤️

I don't want any new device now!

Kind regards

Blaze