ExtremeROM Nexus Installation Guide

Requirements:

• A Computer with the required Samsung USB Drivers
• Odin3
• ADB Platform Tools
• A copy of ExtremeROM Nexus for your device Releases
• The phone itself (duh)
• A USB C cable with data support
• A functional brain

In this guide the S10 Series will be seperated from the S20/Note20/S21 Series so that it is easier for the end user, if you would like to skip to your device use the sidebar located on the right or the links below

Direct Links To Guides

Galaxy S10 Series (S10e, S10, S10+, S10 5G)

Galaxy S20/Note20 Series (S20, S20+, S20 Ultra, S20FE, Note20, Note20 Ultra)

Galaxy S21 Series (S21, S21+ S21 Ultra, S21FE)

⚠️ To complete this guide make sure you have your bootloader unlocked already, If you have not done so yet, you can with This guide

Unfortunately you cannot dirty flash from other ports, although you can back up your data temporarily with Samsung Smart Switch PC (This makes it like you never even erased it)

Galaxy S10 Series (S10e, S10, S10+, S10 5G)

Restock your device

Firstly, Please flash the latest stock Bootloader (BL) and Modem (CP) on your device with Odin3.

💡 If you are unsure as to where you can get your stock firmware from, we recommend Samfw.

⚠️ Make sure that your Odin looks like this with all the files in it (S23+ used here as an example, but it is the same throughout devices.)

⚠️ Be sure to flash the Odinpack for your device in the HOME_CSC slot

💡 Tip: to save time, turn off Auto Reboot in the options tab in Odin

Once Odin says Pass carry on to the next step

Reboot to TWRP

On your device you should see its on the Downloading... screen (if you turned off auto reboot)

While the phone is still connected to the computer, hold the bixby button, power button and volume down button at the same time. After the screen goes black carry on holding bixby and power but instead of volume down hold volume up instead.

If you don't get into TWRP on your first try, turn it off and try again.

Prepare for flashing

Now that you are in TWRP, navigate to the wipe button, then press format data.

Type yes into the promt with the provided on-screen keyboard and press the tick button on the keyboard to reset.

Go back to the TWRP home page and tap on wipe once again, then slide to factory reset.

Now go back to the TWRP home page once again, Press reboot then recovery.

Repartitioning and cleaning

Now that you're back in TWRP do the following steps

Start off by going into Advanced --> ADB Sideload and swipe to start ADB Sideload

Once you have started ADB sideload it should look like this

Now that you have ADB Sideload running, Plug your phone into the computer you're planning to use.

After that, Locate your downloaded platform tools and extract it.

Once you have extracted your platform tools go into the platform-tools directory

Once you are in that directory go to the top of the file explorer window where the path is, click it and type in cmd

After you have done that a new command prompt window should have opened to that directory.

Now that you have that command prompt open, type in adb sideload and then drag the repartitioner zip onto that command prompt and press enter

After the repartitioner is complete, your device should reboot back to recovery.

Repeat these steps from here again but with the cleaner file.

Once the cleaner is complete, you are ready to proceed to the next step.

Installing the ROM

Now that your device is properly partitioned for this ROM, we can now install the actual ROM itself!

This is pretty much the same as the repartitioning step but we don't have to flash an extra file.

Go into Advanced --> ADB Sideload and swipe to start ADB Sideload

Once you have started ADB sideload it should look like this

Now that you have ADB Sideload running, Plug your phone into the computer you're planning to use.

After that, Locate your downloaded platform tools and extract it.

Once you have extracted your platform tools go into the platform-tools directory

Once you are in that directory go to the top of the file explorer window where the path is, click it and type in cmd

After you have done that a new command prompt window should have opened to that directory.

Now that you have that command prompt open, type in adb sideload and then drag the ExtremeROM Nexus zip onto that command prompt and press enter

After this you're all done!

Once the zip is finished installing press "Reboot System" and you're good to go!

Galaxy S20/Note20 Series (S20, S20+, S20 Ultra, S20FE, Note20, Note20 Ultra)

Restock your device

Firstly, Please flash the latest stock Bootloader (BL) and Modem (CP) on your device with Odin3.

💡 If you are unsure as to where you can get your stock firmware from, we recommend Samfw.

⚠️ Make sure that your Odin looks like this with all the files in it (S23+ used here as an example, but it is the same throughout devices.)

⚠️ Be sure to flash the Odinpack for your device in the HOME_CSC slot

💡 Tip: to save time, turn off Auto Reboot in the options tab in Odin

Once Odin says Pass carry on to the next step

Reboot to TWRP

On your device you should see its on the Downloading... screen (if you turned off auto reboot)

While the phone is still connected to the computer, hold the power button and volume down button at the same time until the screen goes black. After the screen goes black carry on holding power but instead of volume down hold volume up instead.

If you don't get into TWRP on your first try, turn it off and try again.

Prepare for flashing

Now that you are in TWRP, navigate to the wipe button, then press format data.

Type yes into the promt with the provided on-screen keyboard and press the tick button on the keyboard to reset.

Go back to the TWRP home page and tap on wipe once again, then slide to factory reset.

Now go back to the TWRP home page once again, Press reboot then recovery.

Installing the ROM

Now that your device is properly reset and ready for this ROM, we can now install the actual ROM itself!

Start of by going into Advanced --> ADB Sideload and swipe to start ADB Sideload

Once you have started ADB sideload it should look like this

Now that you have ADB Sideload running, Plug your phone into the computer you're planning to use.

After that, Locate your downloaded platform tools and extract it.

Once you have extracted your platform tools go into the platform-tools directory

Once you are in that directory go to the top of the file explorer window where the path is, click it and type in cmd

After you have done that a new command prompt window should have opened to that directory.

Now that you have that command prompt open, type in adb sideload and then drag the ExtremeROM Nexus zip onto that command prompt and press enter

After this you're all done!

Once the zip is finished installing press "Reboot System" and you're good to go!

Galaxy S21 Series (S21, S21+ S21 Ultra, S21FE)

Restock your device

Firstly, Please flash the latest stock Bootloader (BL) and Modem (CP) on your device with Odin3.

💡 If you are unsure as to where you can get your stock firmware from, we recommend Samfw.

⚠️ Make sure that your Odin looks like this with all the files in it (S23+ used here as an example, but it is the same throughout devices.)

⚠️ Be sure to flash the Odinpack for your device in the HOME_CSC slot

💡 Tip: to save time, turn off Auto Reboot in the options tab in Odin

Once Odin says Pass carry on to the next step

Reboot to TWRP

On your device you should see its on the Downloading... screen (if you turned off auto reboot)

While the phone is still connected to the computer, hold the power button and volume down button at the same time until the screen goes black. After the screen goes black carry on holding power but instead of volume down hold volume up instead.

If you don't get into TWRP on your first try, turn it off and try again.

Prepare for flashing

Now that you are in TWRP, navigate to the wipe button, then press format data.

Type yes into the promt with the provided on-screen keyboard and press the tick button on the keyboard to reset.

Go back to the TWRP home page and tap on wipe once again, then slide to factory reset.

Now go back to the TWRP home page once again, Press reboot then recovery.

Installing the ROM

Now that your device is properly reset and ready for this ROM, we can now install the actual ROM itself!

Start of by going into Advanced --> ADB Sideload and swipe to start ADB Sideload

Once you have started ADB sideload it should look like this

Now that you have ADB Sideload running, Plug your phone into the computer you're planning to use.

After that, Locate your downloaded platform tools and extract it.

Once you have extracted your platform tools go into the platform-tools directory

Once you are in that directory go to the top of the file explorer window where the path is, click it and type in cmd

After you have done that a new command prompt window should have opened to that directory.

Now that you have that command prompt open, type in adb sideload and then drag the ExtremeROM Nexus zip onto that command prompt and press enter

After this you're all done!

Once the zip is finished installing press "Reboot System" and you're good to go!

Written by @EndaDwagon and @osrott61 (no kang pls)

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