Z3V flash problem - Xperia Z3v General

So my friend tried to flash the latest rom 23.1.D0.509 he said it would straight fail. He tried a different download, it failed somewhere flashing it. now the phone doesn't boot up. It will go into recovery (stock) and flash mode. when I try to flash the old or new ftf it gives me this erro "19/048/2015 20:48:37 - ERROR - Can't read a byte value" I'm now stuck. any ideas?

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After banging my head against the wall a few times. i managed to flash back to 4.4, then it took to 5.0 I have no idea what happened. glad its fixed. i did check resetnvram to get rid of the " ERROR - Next to unit should be the size on 4 digits" after that went just fine

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How did you get it to flash anything? I tried for a few hours to flash the leaked firmware using the ftf file and the Xperia flash tool but the tool doesn't have the z3v as an option what is the workaround to that I'm on stock firmware not rooted

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dethofevolution said:
How did you get it to flash anything? I tried for a few hours to flash the leaked firmware using the ftf file and the Xperia flash tool but the tool doesn't have the z3v as an option what is the workaround to that I'm on stock firmware not rooted
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Click to collapse
I had issues with flashtool as well. Had the Z3 device driver, flashmode and fastboot drivers installed. Phone was in usb debugging mode and set to allow installation from unknown sources. Still had issues with it saying "Processing of loader.sin finished with errors." .... "Error flashing. Aborted"
I read that someone had success with using an older version of flashtool, so I installed 9.18.4 and tried again.
I got the "Drivers need to be installed for connected device." Reinstalled those three drivers mentioned above and tried again.
Got the loader.sin error again, along with "Cannot identify your device." with a prompt to select a device from the list ( I usually chose Z3 (D6603) up until now).
BUT this time I hit cancel and was told "You can only flash devices."
I unplugged my phone, reloaded the ftf, hit flash and it began flashing!
Hope this helps.
The log below is continuous, I split it up for some clarity
Here's my log (was flashing to .376 before rooting to install prerooted lollipop):
17/052/2015 20:52:51 - INFO - Flashtool Version 0.9.18.4 built on 12-05-2014 22:00:00
17/052/2015 20:52:51 - INFO - Executing search strategies to find proxy selector
17/052/2015 20:52:51 - INFO - No proxy found for IE. Trying next one
17/052/2015 20:52:51 - INFO - Proxy found for firefox
17/052/2015 20:52:51 - INFO - Syncing devices from github
17/052/2015 20:52:51 - INFO - Scanning devices folder for changes.
17/053/2015 20:53:02 - INFO - Pulling changes from github.
17/053/2015 20:53:02 - INFO - Devices sync finished.
17/053/2015 20:53:07 - INFO - Device disconnected
17/053/2015 20:53:57 - INFO - Selected Bundle for Sony Xperia Z3 (D6603). FW release : 23.0.E.0.376. Customization : VER
17/053/2015 20:53:57 - INFO - Preparing files for flashing
17/055/2015 20:55:38 - INFO - Please connect your device into flashmode.
17/055/2015 20:55:58 - INFO - Opening device for R/W
17/055/2015 20:55:59 - ERROR - Drivers need to be installed for connected device.
17/055/2015 20:55:59 - ERROR - You can find them in the drivers folder of Flashtool.
17/055/2015 20:55:59 - INFO - Start Flashing
17/055/2015 20:55:59 - INFO - Processing loader.sin
17/055/2015 20:55:59 - INFO - Checking header
17/055/2015 20:55:59 - ERROR -Processing of loader.sin finished with errors.
17/055/2015 20:55:59 - INFO - Ending flash session
17/055/2015 20:55:59 - ERROR -
17/055/2015 20:55:59 - ERROR - Error flashing. Aborted
17/056/2015 20:56:01 - INFO - Device connected in flash mode
17/057/2015 20:57:04 - INFO - Device disconnected
***2nd attempt (after reinstalling drivers)***
17/001/2015 21:01:34 - INFO - Selected Bundle for Sony Xperia Z3 (D6603). FW release : 23.0.E.0.376. Customization : VER
17/001/2015 21:01:34 - INFO - Preparing files for flashing
17/003/2015 21:03:09 - INFO - Please connect your device into flashmode.
17/005/2015 21:05:21 - INFO - Device connected in flash mode
17/005/2015 21:05:21 - INFO - Opening device for R/W
17/005/2015 21:05:21 - INFO - Start Flashing
17/005/2015 21:05:21 - INFO - Processing loader.sin
17/005/2015 21:05:21 - INFO - Checking header
17/005/2015 21:05:21 - ERROR - Processing of loader.sin finished with errors.
17/005/2015 21:05:21 - INFO - Ending flash session
17/005/2015 21:05:21 - ERROR -
17/005/2015 21:05:21 - ERROR - Error flashing. Aborted
17/005/2015 21:05:22 - INFO - Device connected in flash mode
17/006/2015 21:06:23 - INFO - Device disconnected
17/007/2015 21:07:51 - INFO - Device connected with USB debugging off
17/007/2015 21:07:51 - INFO - For 2011 devices line, be sure you are not in MTP mode
17/007/2015 21:07:52 - INFO - Device connected with USB debugging on
17/007/2015 21:07:52 - ERROR - Cannot identify your device.
17/007/2015 21:07:52 - INFO - Selecting from user input <-- I hit Cancel instead of selecting device
17/008/2015 21:08:07 - ERROR - You can only flash devices.
17/009/2015 21:09:44 - INFO - Device disconnected
***3rd attempt***
17/010/2015 21:10:11 - INFO - Selected Bundle for Sony Xperia Z3 (D6603). FW release : 23.0.E.0.376. Customization : VER
17/010/2015 21:10:11 - INFO - Preparing files for flashing
17/011/2015 21:11:44 - INFO - Please connect your device into flashmode.
17/012/2015 21:12:20 - INFO - Device connected in flash mode
17/012/2015 21:12:20 - INFO - Opening device for R/W
17/012/2015 21:12:20 - INFO - Reading device information
17/012/2015 21:12:20 - INFO - Phone ready for flashmode operations.
...
... (after a bunch of operations)
...
17/018/2015 21:18:12 - ERROR - Error parsing TA file. Skipping
17/018/2015 21:18:12 - INFO - Ending flash session
17/018/2015 21:18:12 - INFO - Flashing finished.
17/018/2015 21:18:12 - INFO - Please unplug and start your phone

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Yesterday, I have been playing around with my phone (Z3V) and I was able to flash it to latest leak (23.1.D.0.509) and had no issues. Prior, Flashtool that I downloaded from flashtool.net, the latest version seemed to me that it will not put loader.sin into firmware content. With newest flashtool, the flashing might not work. If you need a detailed guide how to get to latest leak for your phone (z3v) then I will write it for you. I can only tell you how to do it without a root since I was not planning on rooting my device.
P.S. : I will make a video guide on how to flash z3v without root to 23.1.D.0.509 in few days.

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Please do I don't see an official update any time soon

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Luigi711 said:
So my friend tried to flash the latest rom 23.1.D0.509 he said it would straight fail. He tried a different download, it failed somewhere flashing it. now the phone doesn't boot up. It will go into recovery (stock) and flash mode. when I try to flash the old or new ftf it gives me this erro "19/048/2015 20:48:37 - ERROR - Can't read a byte value" I'm now stuck. any ideas?
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Click to collapse
go and install firmware zip with twrp recovery..... all the best