This is obsolete, use https://gbatemp.net/threads/henkaku-use-multiple-accounts-on-a-single-memory-card-and-swap-without-format.436580/ Hello, This tutorial will allow you to swap and use multiple Vita accounts at the same time & their respective games. This is most notably useful for quickly swapping accounts if you have games from two differents accounts on a single Vita. The advantage of this method compared to the coldswap method is that it does not require a PS3 and takes less time to do. Essentially, like the coldswap method, you can have as much 'accounts' as you want with games this way with some clever backup hacking. This can also allow to play games even if the target account is banned. Note that you do not actually need to own the respective accounts if you hack the backups. Thanks to forstvi3n for the original method. For this tutorial, I will assume you are retrieving files from an original target system backup, then restoring to the final system backup. You can also do this with simply retriveing an original account from, for example, an hacked Vita. Here is what you require: A Vita on an exploitable firmware that can use MailWriter (3.52 max) QCMA First we will need to dump some files. On the target backup/system, dump these files (send yourself these strings as links): Code: email:send?attach=vd0:registry/system.dreg. email:send?attach=vd0:registry/system.ireg. email:send?attach=ux0:id.dat. email:send?attach=tm0:npdrm/act.dat. Make a backup of the target system (if you haven't gotten one already). From there, you have two options: If you are planning to simply use two accounts on the same system, first unslave the memory card then pull it out, format the vita, and put it back in once initial setup is done. This will allow you to keep all content on the card, but you will have to set up your original content. If you are planning to use multiple accounts, first make a backup of all content you care about on your PC via QCMA. Then format your vita, go through initial setup with your original account, restore the backup with multiple 'accounts', backup the four above files, then restore the target system's four files (system registry, id.dat and act.dat.) From there, transfer content from the target account that you backed up back on the PC. After that, simply dump the act.dat of the new system, and you are done. The other backed up files are for safety if you know what to do with them. One very important thing to note is that the act.dat HAS to be from your Vita, act.dat's are limited to a single system. I'm currently working on a workaround for this, but right now the workaround is to dump the act.dat you don't have by simply borrowing your friend's memcard (by unslaving his memcard first). To use each of your separate accounts and the respective games, you will have to send yourself the act.dat of that system+games as an email (rename the file to #0, attach it to an email using Thunderbird with subject "email:send?attach=tm0:npdrm/act.dat." without quotes, then send it to your Vita; click on the picture back on the email app, get an error, then press PS and close the app completely). Once done, restart the Vita. You only have to send the email once, so get a respective act.dat and system.dreg+ireg email for each 'account' on your system, also allowing offline use.