Upgrade HTC One M8 To Android 8.1 Oreo via LineageOS 15.1 – Tutorial

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Android 8.1 Oreo based LineageOS 15.1 custom firmware for HTC One M8 is now available. With the help of LineageOS 15.1 ROM you can update your HTC One M8 to a well customized Android 8.1 Oreo. This may not be only way to update your device to Android 8.1 Oreo but surely a good option to try out. Since this build is still going through development, you should expect bugs and force close here and there but overall it should offer you a smooth experience. The ROM is developed by bgcngm@XDA (donate). This is an unofficial build of LineageOS 15.1. If you willing to upgrade your HTC One M8 using LineageOS 15.1 custom ROM then continue reading this guide to learn easy installation steps.

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Android 8.1 Oreo comes with various useful features including multi-window multitasking, better notification management, faster device with better battery optimization, more human emoji, improved security, instant app and much more. Top of all LineageOS custom ROM comes with various additional features that surely improve your using experience.

LineageOS-ROM-TrueAndroid

Warning!

This tutorial is only for HTC One M8. Don’t try this guide on any other Android device. Also, we (True Android Team) are not responsible for any damage caused due to the instruction given in this page. Try this at your own risk. However, it is very unlikely that your device will be damaged if you follow all the instructions as it is which are mentioned in procedure.

Working:

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  • WiFi
  • Bluetooth
  • NFC
  • Camera (Footej Camera is currently required for video recording)
  • FM Radio
  • Telephony (Calls, MMS/SMS and Mobile data)
  • Audio (Record and Playback)
  • Video Playback
  • Sensors
  • GPS

Broken:

  • Camcorder (Footej Camera is currently required for video recording)

htc-one-m8-oreo-update
Pre Requisites:

1. Backup your device data. You can follow our ultimate backup guide.

2. Make sure your device have at least 60% battery power. You can install an app like Battery Notifier BT Free on your Android device to check it easily.

3. You already have USB Driver Installed for HTC One M8 in your PC. [Download USB Drivers]

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4. Make sure USB Debugging is enabled otherwise you won’t able to transfer file between PC and HTC One M8. [Guide].

5. Your device have latest CWM recovery or TWRP recovery installed. [Guide]

If you done everything that we mentioned above then you are ready to follow step-by-step guide on how to install Android 8.1 Oreo based LineageOS 15.1 ROM on HTC One M8.

File Required(Download by clicking on it)

  1. LineageOS 15.1 ROM For HTC One M8 [Filename: lineage-15.1-20171216-UNOFFICIAL-m8.zip]
  2. Google Apps [Filename: open_gapps-arm-8.0-micro-20171017.zip] or any other Android 8.1 Oreo GApps

How to Install Android 8.1 Oreo based LineageOS 15.1 ROM on HTC One M8

  1. Connect your device to PC using USB cable and then copy downloaded files to the SD card of your device. Important: Don’t extract any files.
  2. Disconnect USB and then turn off your HTC One M8.
  3. Now, boot into recovery mode. To do so, press and hold Volume Down and Power button together to boot into HBOOT menu, from there select Recovery [use volume buttons to scroll and Power button to select]. Alternatively try this: Recovery Mode without Key Combination.
  4. Perform a Nandroid backup of your existing ROM that you can restore later if this new ROM not work or you want to go back into your previous ROM. To perform a backup, select Backup and Restore, then on the next screen, select Backup again. Go back to main recovery menu after backup is complete.
  5. Now, perform data wiping task. To do so, select wipe data/factory reset, then select Yes on next screen to confirm your action. Wait few minutes till the data wipe is complete. Now come back to CWM recovery main menu. Select wipe cache partition and after wiping process done, select Wipe Dalvik Cache under advance option to perform Dalvik cache wiping.
  6. Select install zip from sdcard, then select choose zip from sdcard (or /sdcard1 for external storage). Now, locate the LineageOS 15.1 Zip file that you copied earlier in Step 1 and select it by pressing Power button. Confirm installation by selecting Yes – Install _____.zip on the next screen. The ROM installation will begin.
  7. Once the ROM installation process end, repeat the step 6 but choose the open_gapps-arm-8.0-micro-20171017.zip file instead of ROM zip to install the Google apps package.
  8. When installation is completed, go back to the main recovery menu and select reboot system now to reboot your HTC One M8 and boot up into Android 8.1 Oreo ROM LineageOS 15.1.
  9. Returning to Previous ROM: To go back to your previous ROM, boot into recovery, select backup and restore then restore your previous ROM by selecting it from the list.

Tutorial For TWRP Recovery Users:

  1. Connect your device to PC using USB cable and then copy downloaded files to the SD card of your device. Important: Don’t extract any files.
  2. Disconnect USB and then turn off your HTC One M8.
  3. Now, boot into recovery mode. To do so, press and hold Volume Down and Power button together to boot into HBOOT menu, from there select Recovery [use volume buttons to scroll and Power button to select]. Alternatively try this: Recovery Mode without Key Combination.
  4. Create a Backup using TWRP Backup Option.
  5. Perform a Factory Reset (this will delete all apps and their settings and game progress). To do this, Tap on Wipe, then at the bottom of the screen do a Swipe on the ‘Swipe to factory reset‘ option.
  6. Now its time to add zip file for flashing. Tap on Install, then browse to the location where you saved the files and tap on the LineageOS 15.1 Zip file. Then tap on Add More Zips, and add open_gapps-arm-8.0-micro-20171017.zip. Now at the bottom of the screen, do a swipe on the Swipe to confirm flash option to begin flashing.
  7. When installation is completed, go back to the main recovery menu and tap on Reboot and then, tap on System to reboot your HTC One M8 and boot up into Android 8.1 Oreo ROM LineageOS 15.1.
  8. Returning to Previous ROM: To go back to your previous ROM, boot into recovery, select Backup then through Restore option, restore your previous ROM by selecting it from the list.

Congrats! Android 8.1 Oreo firmware based custom ROM LineageOS 15.1 is now installed and running on your HTC One M8. [via]

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