There are many ways to install a zip from recovery, I’ll present for the moment the manual mode:
- Download the ROM from the link given in the article featuring that ROM. It should be a zip file.
- Connect your phone to your computer via USB and mount its storage card.
- Copy the downloaded ROM to the root of the storage card.
- Power your phone off and reboot it into recovery. This will involve using a combination of your device’s hardware keys. Booting your phone into its bootloader / fastboot mode uses your phone’s hardware keys, and varies from phone to phone. For most phones, you can do so by keeping the ‘Volume down’ key held, pressing the ‘Power’ key and then releasing the ‘Volume down’ key once you see the bootloader screen. In case this does not work, try doing it with the ‘Volume up’ key instead of the ‘Volume down’ key. If you still can’t get it to work, you can do a quick Google search using the keywords “how to boot <device name> in recovery”. Once in recovery, you can navigate its menu using the volume up and volume down hardware keys or your phone’s trackball / optical track pad if it comes equipped with one.
- Use the ‘backup and restore’ feature of recovery to backup your existing ROM installation, software and data. This step is known as performing a nandroid backup. For more information on how to make and restore backups, see our guide on how to perform and restore a nandroid backup. ALWAYS perform a backup before flashing a custom ROM, UNLESS you can afford to lose everything that’s on your phone at the moment.
Note: ALWAYS choose to perform the following steps 6, 7 and 8 UNLESS the ROM you are attempting to flash is an updated version of the same ROM that you are currently using, and is compatible with the current installation’s data. It is usually mentioned with the update whether you can install it over a previous version without wiping its data or not.
- Get back to the main recovery menu and use the option ‘wipe data/factory reset’. You will be prompted to confirm this action. Select “Yes – Delete all user data”.
- From the main recovery menu, select ‘wipe cache partition’. You will be prompted to confirm this action. Select ‘Yes – Wipe Cache’.
- From the main recovery menu, enter the ‘advanced’ menu. From this menu, select ‘Wipe Dalvik Cache’. You will be prompted to confirm this action. Select ‘Yes – Wipe Dalvik Cache’.
- Go back to the main recovery menu by pressing the back button and select the ‘Install zip from SD card’ option.
- Select ‘choose zip from sdcard’ to get a list of the files and folders on your SD card. Scroll to the ROM’s file that you copied there in step 3, and select it. You will be prompted to confirm this action. Select ‘Yes – Install file_name.zip’ where file_name.zip is the name of the zip file that you are trying to install.
- Wait patiently while the ROM is flashed to your phone via recovery.
- Once the installation is complete, head back to the main recovery menu if you aren’t there, and select ‘reboot system now’. Your phone will now boot into the newly installed ROM.
For installing just a zip, it’s basically the same thing.. because the ROM is packed as a zip.
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