Write Save

WriteSave.js

/*
*   1. Boot game
*   2. Wait a  second or so (for the game tid to register but before the code mounts the savedata)
*   3. Home button
*   4. Run this script
*   5. ???
*   6. PROFIT
*/

var tid = '0000000000000000'; //Change Title ID here

utils.log("stage1, hijack fsppr and set perms");

sc.getFSPPR();
sc.ipcMsg(1).sendPid().data(0).sendTo('fsp-srv').assertOk();
var pid = sc.read4(sc.ipcBufAddr, 0xC >> 2);
utils.log('Got process PID: '+pid.toString(16));

var buf1_sz = 0x1C;
var buf2_sz = 0x2C;
var buf = sc.malloc(buf1_sz + buf2_sz);
var buf2 = utils.add2(buf, buf1_sz);

//buffer init
sc.write4(1, buf, 0x0>>2);
sc.write8([0xFFFFFFFF, 0xFFFFFFFF], buf, 0x4 >> 2); //This is the permissions value.
sc.write4(buf1_sz, buf, 0xC >> 2);
sc.write4(buf1_sz, buf, 0x14 >> 2);

sc.write4(1, buf2, 0x0 >> 2);
sc.write8([0xFFFFFFFF, 0xFFFFFFFF], buf2, 0x4 >> 2); //This is the permissions value -- actual perms = buf2_val & buf1_val
sc.write4(0xFFFFFFFF, buf2, 0x14 >> 2);
sc.write4(0xFFFFFFFF, buf2, 0x18 >> 2);
sc.write4(0xFFFFFFFF, buf2, 0x24 >> 2);
sc.write4(0xFFFFFFFF, buf2, 0x28 >> 2);

sc.ipcMsg(256).data(0).sendTo('fsp-pr').assertOk().show();
sc.ipcMsg(1).data(pid).sendTo('fsp-pr').assertOk().show();
sc.ipcMsg(0).data(2, [pid,0], utils.parseAddr(tid), buf1_sz, buf2_sz, pid, pid, 0, 0, 0, 0, 0).aDescriptor(buf, buf1_sz).aDescriptor(buf2, buf2_sz).sendTo('fsp-pr').assertOk().show();
sc.free(buf);
sc.free(buf2);

utils.log("stage2, open save data");

utils.log("GetLastUserProfile");
res = sc.ipcMsg(4).sendTo('acc:u1').assertOk();
var userID = res.data;

utils.log('MountSaveData');
res = sc.ipcMsg(51).datau64(1, utils.parseAddr(tid), [userID[0], userID[1]], [userID[2], userID[3]], [0,0], 1, 0, 0, 0).sendTo('fsp-srv').assertOk();

copyFiles = function(saveDir, sdDir){
    var entryCount = utils.trunc32(sdDir.GetEntryCount().assertOk());
    if (entryCount > 0) {
        var entryBuf = new Uint32Array(0x310 * entryCount);
        sdDir.GetEntries(entryBuf, entryCount).assertOk();
        for (i = 0; i < entryCount; i++) {
            var fn = utils.u8a2nullstr(new Uint8Array(entryBuf.buffer, 0x310 * i, 0x300));
            var eType = entryBuf[(0x310 * i + 0x304) >> 2];
            if (eType === 1) {
                //files
                utils.log('[Writing file] ' + sdDir.path + fn + ' -> ' + saveDir.path + fn);
                var fp = saveDir.fs.OpenFile(saveDir.path + fn).assertOk();
                var fp_sd = sdDir.fs.OpenFile(sdDir.path + fn).assertOk();
                try {
                    var size = fp_sd.GetSize().assertOk();
                    var buf = fp_sd.Read(size).assertOk();
                    fp.Write(0, buf, size).assertOk();
                    utils.log('Wrote ' + size + ' bytes');
                } finally {
                    fp.Close();
                    fp_sd.Close();
                }
            } else {
                //folders
                utils.log('[Opening folder] '+fn);
                var f = saveDir.fs.OpenDir(saveDir.path + fn + '/').assertOk();
                var f_sd = sdDir.fs.OpenDir(sdDir.path + fn + '/').assertOk();
                try {
                    copyFiles(f, f_sd);
                } finally {
                    f.Close();
                    f_sd.Close();
                }
            }
        }
    }
};

sc.withHandle(res.movedHandles[0], (ifile) => {
    utils.log("Mounting SD card");
    try {
        var sd_mnt = sc.ipcMsg(18).sendTo('fsp-srv').assertOk();
    } catch(e) {
        throw new Error("Failed to open SD card. Is it inserted?");
    }

    sd_mnt.withHandles((r, m, c) => {
        var fs = new sc.IFileSystem(sc, ifile);
        var fs_sd = new sc.IFileSystem(sc, m[0]);
        
        var dir = fs.OpenDir('/').assertOk();
        var dir_sd = fs_sd.OpenDir('/Saves/'+tid+'/').assertOk();
        try{
            copyFiles(dir, dir_sd);
        } finally {
            dir.Close();
            dir_sd.Close();
        }
        
        utils.log('Closing file systems');
        fs.Commit();
        fs.Close();
        fs_sd.Close();
    });
});

I always get this mistake:
ERROR: [15, 'sc.getFSPPR is not a function. (In \ 'sc.getFSPPR()\', \ 'sc.getFSPPR\' is undefined)' ]