Question Save game backup/restore between devices: current status and prospects?

Discussion in 'Switch - ROM Hacking, Saves, Translations & Tools' started by jklaiho, Apr 16, 2018.

  1. jklaiho

    jklaiho Newbie

    Apr 4, 2018
    I bought a Switch on my trip to Australia last summer, and managed to brick it a few weeks ago (post-5.0 brick on a CharJenPro dock that had no pre-5.0 reports of bricking on Amazon when I got it).

    I already got a replacement machine (an EU unit this time) with the help of a home insurance claim. The cost of getting a replacement was never the real issue, it's the hundreds of hours sunk into Zelda and other titles that bother me. I'm trying to arrange a warranty repair in Australia (not a trivial thing to arrange from Finland, lemme tell you), and hopefully they'll be able and willing to repair or replace the console while also keeping my user account data intact.

    However, before I send it in and risk a console replacement that DOESN'T transfer the saves for whatever reason (eMMC actually fried, or service personnel not even trying to salvage the account data), I'd like to know what the current state of the art is regarding account data transfer between consoles, and if there are any promising prospects on the horizon regarding this.

    Since the old unit won't even boot beyond the Switch logo or enter maintenance mode, a salvage operation would likely have to operate at the eMMC level. I'm assuming that the actual flash chip inside the console is encrypted with a device-specific key, so I can't just take it from the bricked unit and insert it into the new one. Correct?

    Is it worth me even trying to hold on to the old, broken unit in hopes of a method being discovered one day for reading the saves off the eMMC and into the new Switch? Should I just throw caution to the wind and try for a warranty repair, hoping that they at least make an effort to preserve the data?
  2. isoboy

    isoboy GBAtemp Advanced Fan

    Dec 23, 2016
    United States
    I just like the fact that you're not bitching about cloud saves but you're just asking what can possibly be done to help salvage your save data so clearly you accepted this possibility of losing it all when you bought your switch. I WISH I could help you but I don't have a clue.
  3. Kubas_inko

    Kubas_inko "Something funny goes here."

    Feb 3, 2017
    Czech Republic
    I gues on earth.
    Let's say that your Switch's NAND is not fried.

    Nintendo: You can transfer saves between console if you are on 4.1.0 an higher

    "Hackers": Can transfer saves from any FW to any FW via homebrew, probably via hardmod, maybe via something like godmode9 for switch.

    Homebrew for normal user: Can backup and restore saves on 1.0.0 to 3.0.0.

    Near future Atmosphere CFW: Can backup and restore on any FW (technically).

    What you want: Something like godmode9 for Switch or way of hardmoding and downloading whole NAND.

    So right now, you are out of luck, but sometimes in the future (nobody really knows when), you might be able get your saves out (if your NAND is in working condition).

    P.S.: I can be totally wrong.
    Last edited by Kubas_inko, Apr 16, 2018
  4. MonMonz

    MonMonz GBAtemp Fan

    Nov 7, 2014
    I have 2.1 switch can i backup my saves? or its 1.0 and 3.0 only?
  5. Kubas_inko

    Kubas_inko "Something funny goes here."

    Feb 3, 2017
    Czech Republic
    I gues on earth.
    I think that you can connect to pegaswitch on 2.1 so my guess is yes.
    MonMonz likes this.