I have a Coolpad Note 3 and I am trying to unlock the fastboot (bootloader).
Everything is perfectly setup on my Laptop except for one thing that I cannot install recoveries or flash my device through Sp Flash tool.
I have Ubuntu 16.04 LTS on my laptop. Surprisingly I can use adb and connect my phone wired or wirelessly while I develop and test my apps through Android Studio. Although I had no luck with Unity remote for developing and testing through Unity 5.x versions.
I mean that I can connect my phone to my laptop and test apps over WiFi/Wire cause I and it works perfect and I can use
adb commands through the
terminal as well. Only problem is I cannot use
fastboot. Actually running
fastboot in the
terminal produces the regular output it should i.e.
$ fastboot usage: fastboot [ <option> ] <command> commands: update <filename> reflash device from update.zip flashall flash boot, system, vendor and if found, recovery flash <partition> [ <filename> ] write a file to a flash partition erase <partition> erase a flash partition format[:[<fs type>][:[<size>]] <partition> format a flash partition. Can override the fs type and/or size the bootloader reports. getvar <variable> display a bootloader variable boot <kernel> [ <ramdisk> [ <second> ] ] download and boot kernel flash:raw boot <kernel> [ <ramdisk> [ <second> ] ] create bootimage and flash it devices list all connected devices continue continue with autoboot reboot reboot device normally reboot-bootloader reboot device into bootloader help show this help message options: -w erase userdata and cache (and format if supported by partition type) -u do not first erase partition before formatting -s <specific device> specify device serial number or path to device port -l with "devices", lists device paths -p <product> specify product name -c <cmdline> override kernel commandline -i <vendor id> specify a custom USB vendor id -b <base_addr> specify a custom kernel base address. default: 0x10000000 -n <page size> specify the nand page size. default: 2048 -S <size>[K|M|G] automatically sparse files greater than size. 0 to disable
fastboot devices in
terminal has no output.
Same results for
sudo fastboot devices and I even tried
$(which fastboot) devices and
sudo $(which fastboot) devices. No luck on my end.
My Android phone is :
Coolpad Note 3
Running Marshmallow Stock ROM
Rom is unmodified and stock
Phone is not rooted.
Also no custom software like a recovery
Can anybody help me with running fastboot with my Coolpad Note 3.
I found a simple workaround following this method listed on this website here :
What I did for my solution based on the websites instructions
First I booted up my phone normally.
Connect it to your laptop or PC (if you are still using one)
Fire up a terminal (on Ubuntu) or minimal ADB for windows (sorry I don't know for MacOS)
adb reboot bootloader
As soon as I booted into bootloader I enter
fastboot -i 0x1ebf devices into the terminal and I could successfully see the following output:
devicefastbootidhere is the fastboot id of your android device
then I tried to unlock the oem
$ fastboot -i 0x1ebf oem unlock
and was shot down with the following output :
... FAILED (remote: unknown command) finished. total time: 0.002s
I tried not to lose any hope despite the failure:
( The website says that on Coolpad Note 3 like devices you have to enable the option to unlock the oem from the Developer settings ... more on that in the link above )
What worked for me was that my Coolpad Note 3 was running Marshmallow and CoolUI 6.0. older version of my device i.e. my device Coolpad Note 3 was originally shipped with Lollipop as stock Firmware. I manually have flashed the new Marshmallow Stock ROM. What I did next was lucky for me. I do hope other Coolpad users get it right too.
fastboot -i 0x1ebf flash recovery /path/to/recovery_twrp.img
and I was greeted with the following output;
target reported max download size of 134217728 bytes sending 'recovery' (16384 KB)... OKAY [ 1.683s] writing 'recovery'... finished. total time: 1.686s
On the website above the author mentions additional steps to follow to flash recovery on Coolpad Note 3 through fastboot but I didn't had to follow them. I was actually successfull in flashing recovery through fastboot. But for every fastboot command I have to use
fastboot -i 0x1ebf <command here> <options> this method.
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