Continue to hold the Volume Down button until the device has entered the Bootloader.Īnother method to use adb, instead of USB, is over the network: Additionally the backup taken via TWRP would not work in a restore so the device could not be returned to Android 5.1.1!įortunately enabling ‘Advanced restart’ still allows us to start the Bootloader via the Power button and hence TWRP or jump straight into TWRP via the Recovery option.Īlternatively hold down the Power & Volume Down buttons then release the Power button when the device first shows signs of powering up. Note: Having tried many suggestions online without success it must be down to a Linux driver issue for the new operating system. Unfortunately following the upgrade to Android 8.1.1 (LineageOS 15.1) this no longer worked via USB and gave an error: adb reboot bootloader Whilst upgrading our version of Android in the article How To upgrade Android for NetHunter from Linux (part 1) we used Android Debug Bridge (adb) to unlock and boot our device into the Bootloader. ‘Advanced restart’ turned on within ‘Developer options’ on Nexus 7. Magisk can be problematic.įollow the relevant sub-section below based on your device (A or B): A) Rooting with Magisk Manager For rooting this device the ‘LineageOS addonsu’ can be used. LineageOS) that was upgraded by flashing the ROM. Upgraded device – that runs a custom ROM (e.g.For rooting this device, Magisk Manager can be used. Stock device – that runs an original version of Android.There are two methods of rooting a device: Step 3 – Rooting the deviceĪs mentioned in the Prerequisites (Step 1) our device needs an Unlocked Bootloader and a Custom Recovery tool (TWRP) installed. The ZIP file (~1.6Gb) was downloaded then copied to the Downloads folder on our device via the USB cable. #3 is a close match apart from the Android version so we opt for #4. Android version = kitkat (Android 4.4) … mismatch □.#2 – implied there are 18 potential matches on Oreo.Using our Nexus 7 details (grouper, nakasi, Android 8.x / Oreo or LineageOS 15.1) we had these results: Now we need to visit these pages to see if we can find a pre-built match for the details we have about our device: Click here and visit Step 2 within the article to find out more. Nexus 7 has the 1st Generation from 2012 and 2nd Generation from 2013. In certain cases the year of the device may also be relevant e.g. There are some earlier and later versions but these are the main ones we are concerned with: Android version You do not need to upgrade to Android 8.1.1 (Step 7).Īnother piece of information we need is the Android version and associated nickname (in brackets). If you have a ‘stock device’ then you will need to perform Steps 1-6 in our article How To upgrade Android for NetHunter from Linux (part 1) in order to get to the point of having a device that is backed up, has an Unlocked Bootloader, and TWRP (Team Win Recovery Project) installed.
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