[Galaxy Note 4 Q&A, Help & Troubleshooting] mlazzarotto91:
Hi, I have a serious problem with my Note 4 (SM-N910F).

Since the phone where lagging a lot from a few days, yesterday I choose to do a restore to factory condition, but after that it begun to bootloot.

So I flashed the latest 5.11 firmware available (this from Sammobile for Italy.

As soon as I did, I thought that all my problems were gone, but no. After the firmware, I wanted to get root, so after a quick search on Internet, I choose to get this kernel.

But after the flash of the kernel, I begun to have A LOT of problem. So I decided to flash again only the firmware.

Today I tried again to flash the TWRP recovery to flash the kernel .zip to get the root, but as soon as I did it, the phone didn't go beyong the Samsung logo.

I tried to take these steps: firmware-recovery-root, but after a while, ODIN gave me the error of "PIT binary missing" (or similar).

So, I downloaded a .PIT file for the 5.1.1 (I don't remember where) and I reflashed the firmware with the .PIT file and I didn't got any errors.

After I checked that there were no problems, I tried again to install that kernel.

And I tried again, and again, with different 5.1.1 firmwares.

A thing that I think it's important, it's that I noticed that sometimes while powering on the phone, it went automatically to Download Mode, with a message saying that it couldn't boot in "normal mode" and "MMC read error".

Also I noticed that everytime a powered off, or I rebooted the phone, I had to take off the battery in order to turn on again the phone. It seems like the phone never really turns off.

Now, the phone doesn't boot, the recovery isn't working, and the only thing I have is the download mode.

I tried on 2 pcs, with 2 usb cables, with 2 ODIN versions (3.09 and 3.10.6) to flash a couple of 5.1.1 firmware with and without the .PIT file.

Every time I start the flash on ODIN, while flashing the SYSTEM.img, the flashing stops and on the phone I get this message "ODIN: flash write failure".

I don't really know what to do, unless took it to a warranty center. I think that this problem could be caused by a faulty EMMC, or a brick caused by me.

PS: this is the log from ODIN

<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> N910FXXU1COH4_N910FITV1COH1_N910FXXU1COH4_HOME.tar.md5 is valid.
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/005> Added!!
<ID:0/005> Odin v.3 engine (ID:5)..
<ID:0/005> File analysis..
<ID:0/005> SetupConnection..
<ID:0/005> Initialzation..
<ID:0/005> Get PIT for mapping..
<ID:0/005> Firmware update start..
<ID:0/005> SingleDownload.
<ID:0/005> aboot.mbn
<ID:0/005> NAND Write Start!!
<ID:0/005> sbl1.mbn
<ID:0/005> rpm.mbn
<ID:0/005> tz.mbn
<ID:0/005> sdi.mbn
<ID:0/005> NON-HLOS.bin
<ID:0/005> boot.img
<ID:0/005> recovery.img
<ID:0/005> system.img.ext4
<ID:0/005>[COLOR="Red"] FAIL! (Write)[/COLOR]
<ID:0/005>
<ID:0/005> Complete(Write) operation failed.
<OSM> All threads completed. (succeed 0 / failed 1)

UPDATE:

I successfully installed the TWRP recovery (twrp-2.8.6.0-trltexx.img.tar) with ODIN, so I wiped all the partitions but one: SYSTEM. The error is "E:Unable to mount '/system'.

At this point I think I messed up with the partitions.

UPDATE2:

I installed the CWM PhilZ, and with that I formatted the /system partition.

So I tried to re-flash the firmware with no success, but I tried again with the .PIT file and it succeeded!

Do you think I should retry to root it?

UPDATE 3:

So, after the first setup (google account, samsung account, time, etc.) I turned the phone off to insert my SIM card.

But as soon as the smartphone turned off, it powered on itself again in Download mode, showing me this error:

Could not do normal boot.

ddi : mmc_read failed

I think that maybe, there's a problem with the eMMC