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WP7.8 firmware version 8858 available for Lumia 510, 610, 710, 800 and 900 at NaviFirm. Coming soon !!


Great news for those waiting for WP7.8 update for their Lumia 510, 610, 710, 800 and 900 .The Firmware build 8858 appears now at NaviFirm for all the above devices and it is available for most of the European countries and APAC variants . So, pretty strong indication of near future roll out of the update for most of the devices.

If you are impatient types, then may be you can download the firmware and take help of tutorials available to flash your device, though that may be risky as well ;).



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Nayan has more than 10 years of experience of covering Technology and innovations. He is a big Nokia fan and Tech disruptions aficionado. He loves to review new cool gadgets and writing about Android, iOS, Gadgets and general Technology stuff. He has been associated with other well-known Tech sites WinCentral and GadgetOx since long. He currently sports a Lumia 950 XL and Nexus 5X. Other interests include listening to Nu-Metal Hits and Kick-Boxing. Write to him at Email: [email protected]
  • Frenchy

    I can’t find my variant too (059N653). Someone can help me please ?

  • failed on 2nd update, so stuck with 8779.03.. have sms messages I need to keep.

  • Mine fail on 2nd update.. so stuck with 5779.03.

  • cloud

    i cant find my variant (059P529) please help 🙁

  • i have a question, i saw in some videos of updated lumia 800 and 900 to wp 7.8 and in the settings they included ease of access(w/c is available in wp 8). so i updated my lumia 610 to the latest firmware available in navifirm: 1066.0000.8858.12470. But to my dismay there is no ease of access. to the benefit of the readers, ease of access settings is the remedy of windows to the font size problem of windows phones. does this mean updated firmwares are not the same across phone models or lumia 610 is better last prioritized… he he he… reminds me of social justice…

  • Victor Martinez

    Hey i have nokia lumia 610 black and i live in America, how do i now which is my RM and my variant?

    • Remove the back cover and battery, and see the label on the battery holder. There you can find your product code. Once that is known going to NaviFirm will let you know RM and variant.

  • Finally it is going to release officially, can’t wait to update mine 🙂 thank you MS.

  • Rashmi

    Update not for indian device i have lumia 610 RM-835 cod 059P8L3 can i install other rom which rom i istall

  • There is also a nice YouTube Tutorial to Update Windows Phone 7.5 to Windows Phone 7.8 🙂 maybe someone will Need 😉
    Thanks for the Article tough good read 🙂

  • Sunil

    OK the india version is available now

  • Murali

    I downloaded 7.8 version from navifirm and instaled the same with the help of Nokia care suite. And its working superb

  • kashyap

    Which variant to choose for my 710 black? I find no Indian variant.

    • Much better to wait for the final roll out. Not far away.

      • Kashyap

        Haven’t we waited long enough already?
        If an Indian variant isn’t available then I might wait for the official update.

  • Momo

    not for Nokia Lumia 900 RM-808 !!!

    • As expected. The curse of being carrier branded %).