[FIX] Unbrick Nexus 5 stucked in Qualcomm HS-USB QDLoader 9008 mode

OP updated.

I want to make a little comment about this boarddiag tool, and how it works.

Emmc test:

Erase: erase the whole emmc. Even if you select a partition from the dropdown menu,
Read only: Only reads random blocks from the emmc. If you check DUMP it will read back the amount of blocks of a the chosen partition given in the partition.txt
Write only: writes dummy data to the emmc (55AA hex values and some other other random writes on the actual partition).
Read/Write: writes dummy data to the emmc (55AA hex values and some other other random writes on the actual partition) and then verify them by reading it back

I think this test the memory. There is a Level option for it. I dont know what is the differance between the two.

No idea, but in some LG documentations it is for only APQ8064 chipset.

Restores the images.

There is a rawprogram0.xml in model\Nexus5 (MSM8974_HammerHead)\boot_partition_info folder.
The partitions declared here will be flashed to the device if you select nothing in the partititon dropdown menu or in the restore boot img dropdown menu
Boarddiag only cares about the "label" value (have to be tha same as in partition.txt) from rawprogram0.xml. The rest info like startblock, files size and file name will be acquired from the partition.txt.
Partition.txt is a binary file:

0x00-0x03: start block
0x04-0x07: file size in block numbers ( 1 block = 512 byte)
0x08-0x0F: always zero
0x10-0x2F: partition name (must be the same as the label value in rawprogram0.xml)
0x30-0x4F: file name
and the pattern goes on.

I wrote a little program which converts this binary partition.txt to an actual txt. You can get it from here
Copy the partition.txt to the same folder where the bin2txt and txt2bin exes are. Run bin2txt then it will create a readable_partition.txt file. Edit it with notepad++. The start block is in HEX and the file size is in bytes (must be multiple of 512). Partition entries is the number of partition declared in the partition.txt. If you done with the editing then run txt2bin and it will create a new_partition.txt file.