Fastboot & Rescue Mode it’s a that can be used to modify flash partitions on your device. In addition, with this function you can also update the file system on mobiles among other things.
We will show you below what Android Fastboot is and what it is for. We will also show you all the actions you can do with this mobile command and what are the options available to you.
If you want to know how to use Fastboot & Rescue Mode on a Huawei, Samsung, Motorola, Xiaomi or HTC, continue reading because you will find the step by step for each one.
What is Android Fastboot & Rescue Mode and what is it for?
The Fastboot & Rescue Mode is a tool operating system native Android and is used to modify file system images. For this you need to enter from a computer that is connected through a . This feature is used to quickly update firmware without having to use a recovery mode.
This rescue mode can be launched on your device before Android is loaded, even under the circumstance that Android is not installed on the phone. Fastboot & Rescue Mode is also used to wipe partitions and override command line options in the kernel. Many people get confused with ADBthe difference that exists is that ADB runs inside the operating system, while Fastboot does not need it.
The F&RM used to perform manual updates or make a root in the team. Another difference that you have between these functions is when the phone goes into boot mode. In this mode, the ABS it won’t work for you because you don’t have access to the operating system, whereas you can do it with Fastboot.
What kind of actions can I perform from the Fastboot of my Android?
We will show you below all the actions that you can perform using the Android Fastboot commands:
Update or install OS
This is one of the most popular actions of Fastbootfor this you will need to have the ISO of the operating system or with the updates that you want to add. You have to consider that both the device drivers and the package for fastboot you must have them on your PC beforehand.
unlock bootloader
This bootloader that works before Android loads can be unlocked, but it’s a bit more complicated than the previous function due to the impediment of entering the OS. As it happens in the installation of the operating system, here you will also need to have the mobile disks and the package of fastboot.
Other actions
To use fastboot you will have to follow this syntax “fastboot
Among the options you can find:
- -b
: returns the address of a kernel client. - -c
: when you need to override a command line in the kernel, you will have to use this function. - -i
: provides equipment identification. - -l: returns the path of the device.
- -n
: It uses the size 2048 by default, but if you want to know the size of the nand you will have to use this option. - -p: It is useful to know the product number.
- -S
: does not take into account files larger than the indicated size. - -s
: It is used to specify the serial number of the mobile. - -or: when you don’t want to delete the partition before formatting the device, you will have to use this option.
- -w: used to clear user and cache data.
As for the Fastboot & Rescue Mode commands, you can use the following:
- boot
: It is used to download and boot the kernel. - devices: returns a list with all connected devices.
- erase
: wipe a flash partition. - flash
: you will have to use this function when you need to write a file to a partition. - flash:raw boot
: if you need to create a boot image and then flash it, you will have to use this tool. - flashall: when you want to clean flash everything, you’re going to have to use this command.
- format
: formats the partition. - getvar
: It is used to see in the bootloader some certain element. - reboot: restart the android mobile.
- reboot-bootloader: same as the above command, but reboots it into bootloader.
- update
: You will be able to flash the Android mobile from the file name, update.zip.
Steps to enter and exit Android Fastboot & Rescue Mode
The first thing you should know is that you must delete all internal memory of your device. And second, you may lose your factory warranty or from the computer’s telephone company for tampering with the software. Another thing to keep in mind is that not all phones have a fastboot mode that can be accessed.. For this reason and before continuing you will have to make sure that your mobile has Fastboot & Rescue Mode.
You will also need to have android sdk (Software Developer Kit) and different USB drivers for computers according to the operating system you have. Next, you will find a quick guide on how to use fastboot in Android according to the brand from your mobile.
Let’s see:
in Huawei
To get into Fastbootyou must press the key volume down and connect the USB cable. When the screen appears fastboot release the key. If you want to exit Fastboot you just have to press the button power for about 15 seconds.
in samsung
on a mobile samsung you can also activate the mode fastboot by means of a key combination. You should turn off the devicethen press the buttons Home, Power and Volume down at the same time until the screen appears fastboot. To exit is much easier, you just have to restart the phone. In case this does not work, take the battery out of the mobile, wait a few seconds and turn it back on.
at motorola
If you want to enter fastboot you must turn off the device. Then press the buttons at the same time Power and Volume down until you see the fastboot. To exit this tool you must use the command FastbootReboot. Which is at the end of the command list. The phone will go through the whole process and reboot automatically.
in xiaomi
When you want to enter fastboot in a Xiaomi, you must first enter developer options. For this go to the phone settingsthen System and click About of the phone. There look for the build number and press it until it gives you developer permission. Usually you need to press 7 times.
Once you have developer permission you will have to turn off the mobile. Press the key at the same time Power and Volume down Until appears fastboot. To exit you just have to restart the computer, pressing the button To turn off for 15 seconds. The phone will reboot and function as normal.
on HTC
to enter fastboot you must turn off the equipment. Then simultaneously press the Power and Volume Down until you see the screen fastboot. If you want to exit Fastboot, you should use the command Fastboot Reboot at the end of the commands you have run.
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