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I was trying to root my phone. But unfortunately my phone is bricked. I tried to switch on but failed. Even the notification light is not coming. When I connect it with PC using fast boot mood my PC says to me USB device not recognized.

Details on what I did:

  • I have downloaded this file from Mediafire
  • I've unzipped it and there was an .elf file
  • Copied that .elf file in a folder that I've downloaded from this link
  • Copied SuperUser from here to the device's internal storage
  • switched off my phone and started the cmd there
  • Then executed fastboot flash boot keiran-recovery-st25.elf

That brought up my issue then.

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    For us to help, you need to edit your question to say exactly what steps you took when trying to root your phone. That's the only way to know what's gone wrong.
    – Dan Hulme
    Commented Feb 12, 2014 at 11:19
  • @Dan Hulme. I have downloaded a file from this link. unzipped it and there was a elf file. And I paste this elf file in a folder that I've downloaded from this [link] (hackmyandroid.com/…). then I switched off my phone and started the cmd there. then i wrote fastboot flash boot keiran-recovery-st25.elf. and here is the wrong.
    – opu 웃
    Commented Feb 12, 2014 at 11:29
  • I've just integrated the facts from your comment into your question. What looks really strange to me is flashing a Linux .elf binary, which is named recovery, to your boot partition. Looks double-wrong (boot != recovery, .elf != image). So as you obviously borked your /boot partition, this explains your situation. Have you tried booting into recovery, fastboot, upload modes?
    – Izzy
    Commented Feb 12, 2014 at 11:52
  • @Izzy, No, I haven't tried booting into recovery.
    – opu 웃
    Commented Feb 12, 2014 at 12:00
  • @Izzy I missed one thing. Before turning off my phone I have downloaded this app. and i paste it on my internal storage.
    – opu 웃
    Commented Feb 12, 2014 at 12:02

1 Answer 1

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Just followed step 3 from this link. This helps to recover my Xperia P.

How to install the newest Android 4.1.2 for Sony XPERIA P LT22i

  1. First of all, check your firmware version (if you already have the newest one, you do not need this tutorial)
  2. Download and install latest Flashtool from Google Drive, Ulozto or Mega
  3. Download also latest Android 4.1.2 (mirror) for Sony XPERIA P LT22i
  4. Paste the .ftf file downloaded in step 3 to folder /Firmware included in the XPERIA Flashtool

  5. Open the XPERIA Flashtool, click on flash and choose downloaded firmware, then click OK.

    Important - if you do not want to delete any data of your phone, just uncheck flashing userdata.sin file. All data will remain in your phone, but sometimes it can cause additional troubles. So it is better (and I recommend that) to do the backup of your personal data, than proceed with clean instalation and then restore your personal data.

  6. Turn off your phone and when Flashtool shows pop up window, connect phone to PC with holding volume down button
  7. After few minutes all is done and your phone gets the new firmware

(Demonstration video can be seen inside the link)

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    Can you elaborate a bit more to prevent link rot, a link only answer is not a good answer.
    – t0mm13b
    Commented Feb 14, 2014 at 14:25
  • I added the relevant quote. Feel free to improve it.
    – Andrew T. ♦
    Commented May 4, 2015 at 6:05

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