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Update to Kitkat 4.4.2 on my Z1 Eroor 2003

23rd March 2014, 07:49 PM   |  #1  
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Hi im trying to update but my Sony companion 2.1 says error 2003 you have do something diffrent with you hardware i have just unlock bootloader or that im trying to reinstall doesnt work if i do manuall flash i dont now wich File i need on my C603 im from sweden ??
23rd March 2014, 10:02 PM   |  #2  
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You cannot update via OTA or PCC with Unlocked Bootlader, they will not allow you to do that. Then you have to flash via Flashtool v0.9.14 the latest 4.4 for your model from here.
I will recommend to use the Unbranded Global or Commercial one. Good Luck.
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