void patchNIM() {
    // Patch NIM to reply with 0 in CheckSysupdateAvailable.
    u32 patchProc = 0x00000025; // NIM process ID (guess; TODO: need to find this dynamically)
    u32 patchAddr = 0x0010EA00; // 0xE59D036C: ldr r0, [sp, #0x36C]
    u32 patchInst = 0xE3A00000; // 0xE3A00000: mov r0, #0

    Handle handle;
    svcDebugActiveProcess(&handle, patchProc);
    svcWriteProcessMemory(handle, &patchInst, patchAddr, sizeof(patchInst));
}