Coucou!
Merci de ta réponse. En effet, j'ai essayé tout les tutos, mais aucun ne fonctionne, la plupart des liens sont plus actifs...
Je teste ton lien et je te fais un retour das la foulé
EDIT 1:
Bon... ben j'ai fait tout comme il faut avec Flashtool... Mais ça fonctionne pas... J'ai du mal faire quelque chose, je met ce que ça m'a mis dans le programme.
28/003/2017 15:03:53 - INFO - Flashtool Version 0.9.23.1 built on 11-01-2017 15:12:00
28/003/2017 15:03:53 - INFO - Executing search strategies to find proxy selector
28/003/2017 15:03:54 - INFO - No proxy found for IE. Trying next one
28/003/2017 15:03:54 - INFO - Strategy firefox failed trying next one : No Firefox installation found
28/003/2017 15:03:54 - INFO - No proxy found for java. Trying next one
28/003/2017 15:03:59 - INFO - Syncing devices from github
28/003/2017 15:03:59 - INFO - Opening devices repository.
28/003/2017 15:03:59 - INFO - Scanning devices folder for changes.
28/004/2017 15:04:09 - INFO - Pulling changes from github.
28/004/2017 15:04:09 - INFO - Quietly closing devices repository.
28/004/2017 15:04:09 - INFO - Devices sync finished.
28/004/2017 15:04:09 - INFO - Loading devices database
28/004/2017 15:04:09 - INFO - Loaded 98 devices
28/004/2017 15:04:09 - INFO - Starting phone detection
28/004/2017 15:04:14 - INFO - Device disconnected
28/005/2017 15:05:01 - INFO - Flash canceled
28/005/2017 15:05:37 - INFO - Selected Bundle for Sony Xperia SP(C5303). FW release : 12.0.A.2.254. Customization : o2
28/005/2017 15:05:37 - INFO - Preparing files for flashing
28/006/2017 15:06:11 - INFO - Please connect your device into flashmode.
28/006/2017 15:06:22 - INFO - Device connected in flash mode
28/006/2017 15:06:22 - INFO - Opening device for R/W
28/006/2017 15:06:22 - INFO - Reading device information
28/006/2017 15:06:22 - INFO - Phone ready for flashmode operations.
28/006/2017 15:06:22 - INFO - Opening TA partition 2
28/006/2017 15:06:22 - INFO - Current device : C5303 - YT91077H9T - 1272-4906_R4B - 1269-3538_12.0.A.1.257 - GLOBAL-LTE_12.1.A.1.205
28/006/2017 15:06:22 - INFO - Closing TA partition
28/006/2017 15:06:22 - INFO - Start Flashing
28/006/2017 15:06:22 - INFO - Processing loader.sin
28/006/2017 15:06:22 - INFO - Checking header
28/006/2017 15:06:23 - INFO - Flashing data
28/006/2017 15:06:24 - INFO - Loader : S1_Root_7054 - Version : R5G006 / Boot version : R11B023 / Bootloader status : UNROOTABLE
28/006/2017 15:06:24 - INFO - Max packet size set to 64K
28/006/2017 15:06:24 - INFO - USB buffer size set to 512K
28/006/2017 15:06:24 - INFO - No flash script found. Using 0.9.18 flash engine
28/006/2017 15:06:24 - INFO - Opening TA partition 2
28/006/2017 15:06:24 - INFO - Writing TA unit 00002774. Value : 01
28/006/2017 15:06:24 - INFO - Closing TA partition
28/006/2017 15:06:24 - INFO - Processing partition-image.sin
28/006/2017 15:06:24 - INFO - Checking header
28/006/2017 15:06:24 - INFO - Flashing data
28/006/2017 15:06:25 - INFO - Opening TA partition 2
28/006/2017 15:06:25 - INFO - Closing TA partition
28/006/2017 15:06:25 - INFO - Opening TA partition 2
28/006/2017 15:06:25 - INFO - Processing amss_fsg.sin
28/006/2017 15:06:25 - INFO - Checking header
28/006/2017 15:06:25 - INFO - Flashing data
28/006/2017 15:06:25 - INFO - Processing amss_fs_1.sin
28/006/2017 15:06:25 - INFO - Checking header
28/006/2017 15:06:25 - INFO - Flashing data
28/006/2017 15:06:25 - INFO - Processing amss_fs_2.sin
28/006/2017 15:06:25 - INFO - Checking header
28/006/2017 15:06:26 - INFO - Flashing data
28/006/2017 15:06:26 - INFO - Processing cache.sin
28/006/2017 15:06:26 - INFO - Checking header
28/006/2017 15:06:26 - INFO - Flashing data
28/006/2017 15:06:28 - INFO - Processing fotakernel.sin
28/006/2017 15:06:28 - INFO - Checking header
28/006/2017 15:06:29 - INFO - Flashing data
28/006/2017 15:06:31 - INFO - Processing kernel.sin
28/006/2017 15:06:31 - INFO - Checking header
28/006/2017 15:06:31 - INFO - Flashing data
28/006/2017 15:06:33 - INFO - Closing TA partition
28/006/2017 15:06:33 - INFO - Opening TA partition 2
28/006/2017 15:06:33 - INFO - Processing system.sin
28/006/2017 15:06:33 - INFO - Checking header
28/006/2017 15:06:34 - ERROR - Processing of system.sin finished with errors.
28/006/2017 15:06:34 - INFO - Ending flash session
28/006/2017 15:06:34 - ERROR -
28/006/2017 15:06:34 - ERROR - Error flashing. Aborted
28/006/2017 15:06:34 - INFO - Flashing finished.
28/006/2017 15:06:34 - INFO - Please unplug and start your phone
28/006/2017 15:06:34 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings
28/006/2017 15:06:34 - INFO - Device connected in flash mode
28/006/2017 15:06:35 - INFO - Device disconnected
28/006/2017 15:06:38 - INFO - Device connected in flash mode
28/007/2017 15:07:20 - INFO - Device disconnected
28/007/2017 15:07:36 - INFO - Device connected in flash mode
28/008/2017 15:08:20 - INFO - Device disconnected
Voila... si t'as une idée de ce qu'il s'est passé...
EDIT 2: Du coup, j'ai du passer par Xperia Compagnon pour réparer le téléphone vu qu'il ne voulait plus s'allumer, mais je suis toujours en 4.3...