How to upgrade firmware using PC Companion on Sony Xperia Z1 ?

Instead of upgrading the firmware over the air, you can do it using PC Companion. Here’s how:

  1. Install and launch PC Companion on your PC.
  2. Connect your phone to the PC with the USB data cable.
  3. If there’s a new firmware, you’ll see the “new software is now available” prompt. Click the Update button to start the update guide.
    new firmware is now available prompt
  4. On the Start tab, you’ll see some information regarding this firmware upgrade. Click the Accept button to continue.
    start tab tablet software update
  5. Now, the download and installation will begin. Note: Do not disconnect your phone from the PC while PC Companion is downloading and installing the new firmware .
    update tab
  6. Once the update completes, disconnect and turn on your phone as per the on-screen instructions shown on the Finish tab.
    finish tab
  7. Lastly, click the Finish button to close PC Companion.
    finish tab_2

Note: I’ve tried both Over-the-air and PC Companion methods. The former method is much quicker.

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