[Xperia Z3 Developer Discussion [Developers Only]] nailyk:
I see from the github there is a branch 0.9.16 so that is a good idea to test with this version.

First, we see the ta block between your two tries are different. First try block n° 8B2, second try 8FD. I can't understand why (same version of flashtool used).

It take me a lot of time because that was not a hexadecimal place in the ta partition but an unit in the ta partition.

Investigations:

For memory, your unlock code is C88FB2FFCCE72540 (in hex: 43 38 38 46 42 32 46 46 43 43 45 37 32 35 34 30),

my unlock code is 481FD30094B6F2FC (in hex: 34 38 31 46 44 33 30 30 39 34 42 36 46 32 46 43)

If we look in the 8B2 unit we found that:

my ta partition after unlocking

[COLOR="Magenta"]B2 08 00 00[/COLOR] [COLOR="SeaGreen"]10 00 00 00[/COLOR] [COLOR="Blue"]C1 E9 F8 3B FF FF FF FF[/COLOR] 34 38 31 46 44 33 30 30 39 34 42 36 46 32 46 43

your ta partition after unlocking:

[COLOR="magenta"]B2 08 00 00[/COLOR] [COLOR="SeaGreen"]10 00 00 00[/COLOR] [COLOR="Blue"]C1 E9 F8 3B FF FF FF FF[/COLOR] 43 38 38 46 42 32 46 46 43 43 45 37 32 35 34 30

So our unlock code is present. Why it doesn't work?

If I take a look in my ta partition, before unlocking my bootloader, there is no 8b2 unit.

For the 8FD unit, i cannot find it.

So I cannot understand why your first try did not lock the bootloader. Maybe an issue with the usb cable and/or the booted mode, or just with the download of flashtool.

That's sad. I read some thread about dead backlights but not about screen. Did you think software cause this?

Maybe it is just a connection problem between the motherboard and the screen. I read your other post so it maybe is 'just' a bad connection (cleaning or flyed-up)?

Anyway thanks a lot for your time, I learn a lot with information you provide! I will mostly help me for this project.

P.S.: don't forget I'm looking for a dev z3, broken screen is not a big deal for me ;) Contact me privately if your friend is ok to sell that phone to me.

P.S.2: just for fun:

if you take a look in the (critical) 7DA ta unit it look like:

hexdump -C TA.img -s 0x0002073c -n 664
0002073c [COLOR="Magenta"]da 07 00 00[/COLOR] [COLOR="SeaGreen"]87 02 00 00[/COLOR] [COLOR="Blue"] c1 e9 f8 3b ff ff ff ff[/COLOR] |...........;....|
0002074c 73 eb 3d 40 59 80 18 1a 68 1a 33 84 5b a6 ad c3 |s.=@Y...h.3.[...|
0002075c 45 d3 66 47 02 00 05 0a 02 00 00 00 0a db 37 24 |E.fG..........7$|
0002076c 02 0c b2 c4 85 f4 c9 6c 21 f1 84 33 29 4d 27 ff |.......l!..3)M'.|
0002077c 81 20 a3 65 b6 40 3c 80 16 c9 4a e3 1b 59 d6 54 |. .e.@<...J..Y.T|
0002078c fa 50 37 82 f9 50 53 ce 1c dc aa fb 0b 98 96 e3 |.P7..PS.........|
0002079c 22 6a 02 00 00 00 0a d2 d9 95 24 b0 77 2b 91 59 |"j........$.w+.Y|
000207ac 59 f2 ee 30 a1 dc d9 88 c7 79 51 20 a2 19 73 0e |Y..0.....yQ ..s.|
000207bc 30 4c a1 29 94 4c 43 2b 8a cd 23 e9 3a 09 0b 03 |0L.).LC+..#.:...|
000207cc 06 74 6a 86 1f ce 97 ea 6c d0 b7 ba 00 90 4f 50 |.tj.....l.....OP|
000207dc 5f 49 44 3d 22 34 33 35 22 3b 4f 50 5f 4e 41 4d |_ID="435";OP_NAM|
000207ec 45 3d 22 43 75 73 74 6f 6d 69 7a 65 64 22 3b 43 |E="Customized";C|
000207fc 44 41 5f 4e 52 3d 22 31 32 38 38 2d 35 30 32 38 |DA_NR="1288-5028|
0002080c 22 3b 52 4f 4f 54 49 4e 47 5f 41 4c 4c 4f 57 45 |";ROOTING_ALLOWE|
0002081c 44 3d 22 31 22 3b 52 43 4b 5f 48 3d 22 46 41 45 |D="1";RCK_H="FAE|
0002082c 46 35 31 39 39 31 34 31 39 34 36 38 43 41 37 38 |F51991419468CA78|
0002083c 43 39 43 33 37 30 38 35 36 31 36 43 42 33 31 39 |C9C37085616CB319|
0002084c 42 39 46 36 36 45 30 35 30 45 34 33 31 38 34 37 |B9F66E050E431847|
0002085c 41 39 41 34 36 46 43 33 39 44 42 41 34 22 00 43 |A9A46FC39DBA4".C|
0002086c 53 45 52 56 45 52 49 44 3d 22 62 6d 63 73 65 63 |SERVERID="bmcsec|
0002087c 73 30 33 22 3b 41 55 54 48 43 45 52 54 3d 22 55 |s03";AUTHCERT="U|
0002088c 4e 4b 4e 4f 57 4e 22 3b 54 49 4d 45 53 54 41 4d |NKNOWN";TIMESTAM|
0002089c 50 3d 22 31 35 30 34 30 39 20 32 30 3a 33 31 3a |P="150409 20:31:|
000208ac 35 38 22 00 09 00 07 30 30 31 30 31 2d 2a 00 00 |58"....00101-*..|
000208bc 00 00 00 00 00 00 00 00 00 00 02 00 00 00 0a 4e |...............N|
000208cc d0 29 6b 2c bf 7b ec 14 0b bb 94 f5 9c fa 62 6a |.)k,.{........bj|
000208dc 1c 02 61 20 6d 79 f5 a7 3e ca c6 6e 30 69 30 f7 |..a my..>..n0i0.|
000208ec c3 a4 80 1e 60 bc ba e8 59 7d 5e 99 55 c4 47 e9 |....`...Y}^.U.G.|
000208fc f5 f5 58 be 02 00 00 00 0a 36 04 d9 c2 fd 86 a1 |..X......6......|
0002090c a1 3c 91 c1 d0 8d bb 35 ab a6 b1 10 f0 20 67 0e |.<.....5..... g.|
0002091c dc a5 62 dd 45 db 51 1e eb 6e f7 c6 95 58 f1 d4 |..b.E.Q..n...X..|
0002092c 39 73 5d 53 c5 22 14 b2 06 be 0c 01 ea 5f 02 00 |9s]S."......._..|
0002093c 00 00 0a 22 39 fe 4a f7 2e 93 6d a7 70 5d 3e 53 |..."9.J...m.p]>S|
0002094c a3 11 6c 96 70 84 18 20 3a 17 7b 00 05 63 1b fc |..l.p.. :.{..c..|
0002095c 6b 96 a4 e2 22 33 e2 05 7a 38 7b 72 81 60 ee ec |k..."3..z8{r.`..|
0002096c f9 da 55 c8 c1 81 e7 bd 02 00 00 00 0a cc 10 ff |..U.............|
0002097c a1 49 75 63 f3 c9 ee 40 fa d8 ac 09 65 b6 e6 dc |.Iuc...@....e...|
0002098c a3 20 9c 57 33 bf 51 c3 ff 29 20 78 fa 57 2c 69 |. .W3.Q..) x.W,i|
0002099c a5 97 52 fc 33 fa 97 f6 3d 5d 38 89 e0 d7 34 1c |..R.3...=]8...4.|
000209ac 95 eb 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
000209bc 00 00 14 57 0a e6 ee af 30 a1 e8 57 69 59 10 22 |...W....0..WiY."|
000209cc 6f 78 32 5c 5c f4 0b ff |ox2\\...|
000209d4

There is a RCK_H key. With the script provided here i enter your unlock code and the script answer that:

RCK_H="FAEF51991419468CA78C9C37085616CB319B9F66E050E431847A9A46FC39DBA4"

When you enter 'fastboot oem unlock <key>' the key is computed by s1 and compared to this information.