[Xperia Z5 Premium Q&A, Help & Troubleshooting] haobodoi:
[MENTION=5613633]YasuHamed[/MENTION] ,

My Z5P 6853, i did unlock bootloader yesterday in 5.1 ( 32.0.A.6.200 ), now i flash back to 6.0 (MM 32.2.A.0.305 ), but flash could not be done, I try in many MM ftf , but all error and stuck after SONY logo ( if I flash back 5.1 , the phone will be work fine )

Error by flashtool :

=========================

21/006/2017 03:06:12 - ERROR - root : this bundle is not valid

21/006/2017 03:06:12 - INFO - Selected Bundle for Sony Xperia Z5 Premium (E6853). FW release : 32.2.A.0.305. Customization : Customized SG

21/006/2017 03:06:12 - INFO - Preparing files for flashing

21/008/2017 03:08:40 - INFO - Please connect your device into flashmode.

21/008/2017 03:08:52 - INFO - Device connected in flash mode

21/008/2017 03:08:53 - INFO - Opening device for R/W

21/008/2017 03:08:53 - INFO - Reading device information

21/008/2017 03:08:54 - INFO - Phone ready for flashmode operations.

21/008/2017 03:08:54 - INFO - Opening TA partition 2

21/008/2017 03:08:54 - INFO - Current device : E6853 - CB5A2BSYT2 - 1300-8699_R1B - 1296-2432_32.0.A.6.200 - GENERIC_32.0.A.6.200

21/008/2017 03:08:54 - INFO - Closing TA partition

21/008/2017 03:08:54 - INFO - Start Flashing

21/008/2017 03:08:54 - INFO - Processing loader.sin

21/008/2017 03:08:54 - INFO - Checking header

21/008/2017 03:08:54 - INFO - Flashing data

21/008/2017 03:08:55 - INFO - Loader : S1_Root_f936 - Version : MSM8994_50 / Boot version : S1_Boot_MSM8994_LA1.2_119 / Bootloader status : ROOTED

21/008/2017 03:08:55 - INFO - Max packet size set to 4096K

21/008/2017 03:08:56 - INFO - Making a TA backup

21/008/2017 03:08:56 - INFO - Opening TA partition 1

21/008/2017 03:08:56 - INFO - Start Dumping TA partition 1

21/008/2017 03:08:57 - INFO - Finished Dumping TA partition 1

21/008/2017 03:08:57 - INFO - TA partition 1 saved to C:\Users\Hao\.flashTool\registeredDevices\CB5A2BSYT2\s1ta\2017-02-20_03-08-56\1.ta

21/008/2017 03:08:57 - INFO - Closing TA partition

21/008/2017 03:08:57 - INFO - Opening TA partition 2

21/008/2017 03:08:57 - INFO - Start Dumping TA partition 2

21/008/2017 03:08:57 - INFO - Finished Dumping TA partition 2

21/008/2017 03:08:57 - INFO - TA partition 2 saved to C:\Users\Hao\.flashTool\registeredDevices\CB5A2BSYT2\s1ta\2017-02-20_03-08-56\2.ta

21/008/2017 03:08:57 - INFO - Closing TA partition

21/008/2017 03:08:57 - INFO - Parsing boot delivery

21/008/2017 03:08:57 - ERROR - root : this bundle is not valid

21/008/2017 03:08:57 - INFO - No flash script found. Using 0.9.18 flash engine

21/008/2017 03:08:57 - INFO - Opening TA partition 2

21/008/2017 03:08:58 - INFO - Writing TA unit 00002774. Value : [01]

21/008/2017 03:08:58 - INFO - Closing TA partition

21/008/2017 03:08:58 - INFO - Processing partition.sin

21/008/2017 03:08:58 - INFO - Checking header

21/008/2017 03:08:58 - INFO - Flashing data

21/008/2017 03:08:58 - INFO - Phone boot version : S1_Boot_MSM8994_LA1.2_119. Boot delivery version : S1_Boot_MSM8994_LA1.2.2_42

21/008/2017 03:08:58 - INFO - Going to flash boot delivery

21/008/2017 03:08:58 - INFO - Ending flash session

21/008/2017 03:08:58 -

ERROR - TA entry (0000084F)parsing error

21/008/2017 03:08:58 - ERROR - Error flashing. Aborted

21/008/2017 03:08:58 - INFO - Flashing finished.

21/008/2017 03:08:58 - INFO - Please unplug and start your phone

=============================

could you help to instruct me how to flash up 6.0, then I could try rom cook in MM.

Thanks and appreciate and wait for your help...