Sony Walkman NWZ-W273S and Firmware Update

I’ve just bought a NWZ-W273S to listen music while swimming training. While it’s extremely easy to add songs (just drag&drop in Music folder), updating to 1.10 firmware proved to be impossible. It didn’t work on Mavericks, XP or Win7.

So after countless tries, I dig to the temp folder and copied the ~20MB “” file. Just like updating a Sony camera, copied the file to the root of the device, and powered off and on. The led rapidly blinked red and it turned itself off. When I plugged in again and checked the Information.txt file, the firmware showed 1.10. Success!

10 thoughts on “Sony Walkman NWZ-W273S and Firmware Update”

  1. Hi!
    I’ve got the same problem, there’s no way to update the firmware. Could you explain to me how you updated it? I’m not able to find the Temp folder or the “” file.
    Thank you so much!

  2. Thanks for the insight, and the explanation.
    This procedure failed under OSX (Mavericks and Yosemite).
    I borrowed a Wintel laptop, and followed this procedure. FWIW – 1 change, I had to extract the installer (exe) – to the local drive, to find the file. Copy this file to the root of the NSZ-W273s. Unplug from via the USB – and the unit will flash RED for up to 2 minutes. The flashing LED indicates the UPDATE started, as soon as you unplug the device. Check your info.txt for the update (will read 1.10)

  3. NSZ-W273 firmware 1.10 isn’t necessary for NSZ-W273S . I also think that is unappropriate because the firmware version is specifically dedicated to the device. All the features are natively supported, included playlists.

  4. Thanks to this post I was able to repair my bricked NWZ-W273S which suddenly stop responding to all commands. I try to reset/format/ charge with no success at all . The procedure is very simple and even the firmware isn’t designed for the ‘S model , is working fine. Thank you!

  5. May I ask where to download the update? I’ve got a Preminum Red NWZ-W273S with 1.00 firmware but I’m not sure whether there are firmware updates for the product

  6. thanks you are great, before there was a couple of mp3 song that din´t play just cuple of beeps instead, try update but was impossible, your instructions work perfeclty and now all songs playing ¡¡¡¡¡¡¡¡¡

  7. Hello,

    Have anyone of you had problem with charge status showing 50% when batteries get depleted as you start to recharge your device? This is the case in my situation and I think it might to do with one dead battery.

  8. Hi I wanna ask you, what is the benefit of upgratting firmware v 1.10 ? is there any effect to the sound or anything when we success to upgrade it?

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