[Lenovo P2 ROMs, Kernels, Recoveries, & Other Devel] lp2yisdfu:
Bricked P2

I followed these steps verbatim, and

my phone is now bricked!!

Process to

brick:

Phone bought from China, but shown as p2a42 before flash.

Phone updated from Android M to N (required 3 sequential updates to hit latest version)

Unlock bootloader via developer in Android (after 14 days waiting),

reboot,

check bootloader is unlocked.

Install TWRP as per post. 3.1.1.-1

Reboot into TWRP recovery.

Enable permissions for TWRP.

Install SuperSU as per post. 2.59

Reboot phone through TWRP menu, the Lenovo P2 vibrates for 5 seconds, and flashes a blue LED, with a black screen.

Restarting with power button brings up Lenovo logo splash screen, then goes back to vibration, blue LED and black screen.

Edit:

I managed to get into recovery after trying several times holding the power and volume keys together, once it goes to white screen let go off power but keep holding volume keys or it will reboot again, it was previously showing up as HUSB_Bulk on my pc, but hopefully I can fix it?

I've compared the version of SuperSU I downloaded, with all the other versions in the link, and in the youtube video and they all return the same SHA1 checksum, so I have no idea why it is bricked right now.

Found a ton of other users with the same issue in the xda thread [GUIDE][Stock] Lenovo P2 Nougat Root Method

Found a .zip to remove super user called unSU, did not work for me.

I would just flash the stock back, but I'm scared about doing so after reading the following:

Warning! Following images are all confirmed working for the P2a42!

Do NOT attempt to use it on the P2c72 it will brick your device!

If you need an P2c72 factory flasher version! Let me know i will provide you with one!

Edit: 2

I have realized the potential cause of the problem. I originally bought my phone from China, it started out as a p2c72 that is then flashed with the p2a42 firmware/software before being sold to me.

From retailer site Tips: Lenovo P2 ( P2C72 ) is the phone name on product box.

Lenovo P2 ( P2A42 ) is the phone name in about phone.

It's 64GB ROM.

So this might explain why only some of us get the blue LEDs, blackscreen, vibration bootloop, and other users are fine. It's likely there is a hardware difference in the phone, or despite being updated to p2a42 the file system is unchanged or there are remnants of p2c72.

celoxocis, I would really hope you update the op with some of this information, because this method for gaining root access is very hit and miss, and is unstable, I followed the instructions exactly and ended up bricked.

Good info. in thread on XDA titled Change p2c72 to p2a42

I have just installed the factory image by fastboot as shown in the video, but the phone is taking a long time to start up, it's on the white Lenovo powered by Android screen, any ideas how long this might need to run for? I'm worried it's still broken.

Edit 3:

Still stuck on Lenovo Powered by Android screen after 1 hour, worried about image burn in so I restarted. It starts out with the green android man and a lock icon, but he disappears after 5 seconds, and then it doesn't change again.

Literally been trying to fix this for 8 hours, been awake all night, no sleep for 24 hours, tried posting on here, and on the IRC channel, but have had no response. Uploaded the recovery.log, it is 1MB of text, zipped, desperate situation.

Edit 4:

I tried to flash stock after no luck with anything else, the recovery is back to Lenovo, and the phone goes to the bootlogo and hangs every time, I've tried the procedure twice (with slight changes) and get the same results. I then tried flashall.bat, but I get an error on some segments. I think the partition that is broken is one that is locked by having an unlocked bootloader, so I can't do anything unless I relock the bootloader somehow?

Please and Thanks for any help