[HELP] Unable to flash firmware on Xperia SP C5303 using flashtool

So, the problem is that Xperia SP was working nice on Carbon 4.4.4 but then I flashed a kernel with bad WiFi module. That had a builtin TWRP (I previously had CWM and backed up everything using CWM)... then I did a really bad thing. I renamed boot.img from CWM backup to boot.emmc.win (TWRP compatible) which subsequently flashed CWM and old kernel. I forgot to restore my SYSTEM as some kernel parts are there (I knew it wouldn't work but I had plan to restore it via CWM)

Then I rebooted into recovery but it didn't reboot. Instead it showed me Sony logo and red LED. Then black screen and repeats same. I learnt how to hard reboot and it did no good. I have unlocked bootloader and I'm trying the flashtool but it won't recognize my phone (I have installed C:\Flashtool\drivers\*) on Windows 10 but it didn't do any good either.. Now when I reboot into fastboot mode it shows me blue LED but isn't detected by flashtool;
Same is with the Flash Mode. Green LED but no connection. On the notifs panel on PC It shows that device not recognized. On Device manager it shows: Unknown USB device (Device descriptor request failed)

I wanna install the drivers but they're already done. I reinstalled them twice just for surety's sake... Any suggestions to install drivers and flash the firmware? I don't know much about Sony as this is not mine, this is a free device that no one uses in my family. I own jfltexx

HELP issue when try to flash and relock (C5303 ULB)

I did a clean install of CM 12.1 and after y tried to flash a Stock Rom (ftf) but i couldn't do that.
Show this log.
I only want relock bootloader (that i can't. With adb i give an error and with Flashtool the progress stop when y click on relock)

CM12.1 and kernel of the Rom

1- First try

Quote:

13/003/2015 04:03:07 - INFO - Device connected in flash mode 13/003/2015 04:03:22 - INFO - Selected Bundle for Sony Xperia SP (C5303). FW release : 12.0.A.2.254. Customization : Customized CE4 13/003/2015 04:03:22 - INFO - Preparing files for flashing 13/003/2015 04:03:36 - INFO - Please connect your device into flashmode. 13/003/2015 04:03:37 - INFO - Opening device for R/W 13/003/2015 04:03:37 - INFO - Reading device information 13/003/2015 04:03:48 - INFO - Unable to read from phone after having opened it. 13/003/2015 04:03:48 - INFO - trying to continue anyway 13/003/2015 04:03:48 - INFO - Start Flashing 13/003/2015 04:03:51 - INFO - Processing loader.sin 13/003/2015 04:03:51 - INFO - Checking header 13/003/2015 04:03:51 - ERROR - Processing of loader.sin finished with errors. 13/003/2015 04:03:51 - INFO - Ending flash session 13/003/2015 04:03:51 - ERROR - Error in processHeader : 22 : El dispositivo no reconoce el comando. 13/003/2015 04:03:51 - ERROR - Error flashing. Aborted 13/003/2015 04:03:51 - INFO - Device disconnected

2- Second try

Quote:

13/018/2015 04:18:39 - INFO - Preparing files for flashing 13/018/2015 04:18:47 - INFO - Device connected in flash mode 13/018/2015 04:18:49 - INFO - Please connect your device into flashmode. 13/018/2015 04:18:50 - INFO - Opening device for R/W 13/018/2015 04:18:50 - INFO - Reading device information 13/018/2015 04:18:50 - INFO - Phone ready for flashmode operations. 13/018/2015 04:18:50 - INFO - Opening TA partition 2 13/018/2015 04:18:50 - INFO - Current device : Unknown: Jan 19 2014/22:13:32 - YT910M945P - Unknown: Jan 19 2014/22:13:32 - Unknown: Jan 19 2014/22:13:32 - Unknown: Jan 19 2014/22:13:32 13/018/2015 04:18:50 - INFO - Closing TA partition 13/018/2015 04:18:50 - INFO - Start Flashing 13/018/2015 04:18:52 - INFO - Processing loader.sin 13/018/2015 04:18:52 - INFO - Checking header 13/018/2015 04:18:53 - INFO - Flashing data 13/018/2015 04:18:58 - INFO - Loader : S1_Root_7054 - Version : R5G006 / Boot version : R11B023 / Bootloader status : ROOTED 13/018/2015 04:18:58 - INFO - Transfer buffer size : 32768 13/018/2015 04:18:58 - INFO - You must have the according fsc script to flash this device. 13/018/2015 04:18:58 - INFO - Flashing finished. 13/018/2015 04:18:58 - INFO - Please unplug and start your phone 13/018/2015 04:18:58 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings

I can't flash anything and cant relock bootloader for use PC Companion.


¿What can i do?
Depending of the rom that i install, i can do it or not.
If i flash a kernel via fastboot with recovery i can install a diferent rom, but i continue without can relock bootloader or flash a .ftf

Always gime me the same error, the "fsc script"

Also, i say that when Flashtool "start" to flash, my C5303 power off the green light, and when Flashtool stop of trying flash, the light power on again.


PD: Can't flash the file for relock bootloader and can't relock bootloader with adb.

This happend when try to relock. (Relock button clicked and green bar stopped)
oi57. tinypic. com/wb9tnd .jpg

(link with spaces)

[Q] Sony Xperia SP C5303 boot loop !! Please Help :'(

I feel like this is going to be a long thread but I'll make it short as much as possible with as much details

I have a SONY Xperia SP C5303 stuck in a boot loop, it was given to me by a friend.
The phone was on stock firmware, android 4.3, unrooted, bootloader locked.
As he was using the phone while charging, he activated WiFi, after a while he activated Bluetooth (WiFi and Bluetooth at the same time) and then it just turned off, rebooted and stuck in the "SONY logo => Xperia logo=> Orange logo" boot loop and then it just fades away and blacks out and reboots.

After many attempts, he wasn't able to fix it and he gave it to me .
Now the first thing I did was flashing it using FlashTool with the firmware "C5303_12.1.A.1.207_AU" but still stuck on boot loop, the only thing that happened is that the Orange logo changed into the colorful waves animation.

I flashed it a couple of times more, the same method, but still, the same results.
Next thing I did, I updated it using SONY PC Companion, after the update finished, it was still in boot loop (ALTHOUGH, the lock screen DID appear but I was not able to do anything, and the screen faded away again)

So, I sent it to a repairer, here's what he have done :
_ He did something (?) and gave it back to me with 0 charge, so I charged it at home and when I turned it on, still boot loop, so I returned it to him.
_ This time, it ACTUALLY worked ! The phone came back to life, everything was working just fine, until I activated WiFi and I noticed that it's not working, then I activated Bluetooth as well (AT THE SAME TIME, remember what I said at first ?) then the screen just faded away and back to boot loop, I sent it back to the repairer and told him that he hasn't changed anything and that the real issue is that WiFi and Bluetooth do not work/cause boot loop when working at the same time
_ He revived the phone once again but the WiFi/Bluetooth issue was not fixed and he told me that there's nothing he can do anymore, and he refunded me.

I can't complain though cause all I wanted was the phone working !! I didn't care less about WiFi nor Bluetooth.
This morning, as I wanted to root the device, I tried the DoomLord Easy Rooting Toolkit, after flashing the first kernel using FlashTool (Yes, I followed the steps VERY carefully) and after the flash of the kernel finished, the phone is once again in boot loop, this time boot looping on the SONY logo only

So the conclusion is that the phone can actually be revived. How ? That's what I'd kill to know !! (Jk)
I tried flashing again the "C5303_12.1.A.1.207_AU" (4.3) but nothing, then I tried the previous firmware (4.1) but still nothing.

Sometimes, after the flashing, when the phone boots for the first time, the lock screen appears but fades away again (unable to touch anything)

SO PLEAAAAAAASE !! If there's anything I can do, please tell me, all I want is for the phone to work, hell to the data or anything else, also don't mind the warranty at all. And I'm not from the US, so there are no SONY service points here :p

There's a video in the rar file attached down there, it shows how the boot loop happens.

Attached Files

20150801_201413.rar - [Click for QR Code] (7.45 MB)