[Lenovo K6 / K6 Power / K6 Note ROMs, Kernels, Reco] Advokatrix:
How to solve the stuck "fastboot mode" bootloader

After running LOs 14, 15 and now 16 on my Lenovo K6 (K33a48), I bricked my bootloader by updating my TWRP to the official 3.3.1 firmware, trying to install "GApps arm64 9.0 pico" to the recent LOs 16 build by Karthick.

Since I am no expert at all and I would be one of those guys who should stay away from those kind of things, I did not read Karthicks post above carefully, installing the latest TWRP he is providing.

My phone was booting into LOs just fine but when I tried to go to TWRP, my phone got stuck on the "Lenovo Screen" displaying "Fastboot Mode". It just never went on. Since others are having similar issues here is my guide on

HOW TO SOLVE THE STUCK "FASTBOOT MODE" BOOTLOADER

​

Procedure was performed on a Lenovo K6 K33a48 (2GB RAM, 16GB ROM, 3000mAh) with bootloader already unlocked in the first place

Step 1:

Download and install all drivers and files you need (if you dont have them already installed):

-

ADB Drivers

(I used the ADB Setup 1.3 instead of 1.4 because 1.4 did not work for me)

-

Lenovo USB Driver

-

TWRP

(by Karthick, NOT from official site!!!) named: twrp-3.3.1-0-karate-9.x-2019-09-13-1510.img

- (OPTIONAL) The latest ROM of LOs 16 from the original post (if you want to flash it from scratch, using the wiping procedure thats explained there)

DISCLAIMER:

Since its my first post, I cannot post links to all of these files unfortunately. So, use google to your best capability :highfive:

Step 1.1

Create a folder for all files on your desktop.

Step 2:

Make sure your OEM bootloader is unlocked and USB-Debugging is activated (not sure if this helps but I had everything activated in this regard).

You find these settings in your developer settings (just if you forgot about it) :p

Step 3:

Connect your phone via USB and power off.

Step 4:

Turn on your phone, trying to load into TWRP as you would do usually (holding power button and volume up and down all at the same time).

You see the white screen with the Lenovo Logo and the green writing "FASTBOOT MODE" on top

Step 5:

Open the folder with all files and press "shift" + "RMB" on any white space in your folder and select the option to run/open power-shell there.

A blue power-shell window should be open now.

Step 6:

Type in following commands and press enter after each one:

Type:

fastboot devices

It should recognize one device

Now type:

fastboot flash recovery [I]"filename"[/I].img

Insert the filename of your TWRP image that you downloaded and put into the folder (in my case it was

twrp-3.3.1-0-karate-9.x-2019-09-13-1510.img

)

Something like that should appear:

target reported max download size of 535822336 bytes
sending 'recovery' (21277 KB)...
OKAY [ 0.677s]
writing 'recovery'...
OKAY [ 0.533s]
finished. total time: 1.213s

Thats good so far :)

Now type in:

fastboot boot [U][I]"filename"[/I][/U].img

Again, insert the proper filename of your TWRP image (in my case it was

twrp-3.3.1-0-karate-9.x-2019-09-13-1510.img

)

Something like that should appear:

downloading 'boot.img'...
OKAY [ 0.676s]
booting...
OKAY [ 0.611s]
finished. total time: 1.287s

NOTE: while you did that, lookt at your phone. It should now say something like "FLASHING..." or similar (instead of just "FASTBOOT MODE")

Step 7:

Let your phone flash the image. When its done, it is loading directly into TWRP (now v.3.3.1).

Power off again and load again into TWRP to confirm it is loading properly and isnt stuck on fastboot mode anymore.

Step 8:

Enjoy TWRP, LOs and GApps again and have a critical thought why you had to follow that manual to fix your bootloader in the first place :angel:

P.S. This might be the only post from me, until I manage to break stuff again :laugh: Hope this manual is useful to someone :)