diff --git a/package_installer.c b/package_installer.c
index c07de09..20cf50a 100644
--- a/package_installer.c
+++ b/package_installer.c
@@ -243,7 +243,7 @@ int makeHeadBin() {
   getSfoString(sfo_buffer, "TITLE_ID", titleid, sizeof(titleid));
 
   // Enforce TITLE_ID format
-  if (strlen(titleid) != 9)
+  if ((strlen(titleid) != 9) || (strncmp(titleid, strupr(titleid), 9) != 0))
     return VITASHELL_ERROR_INVALID_TITLEID;
 
   // Get content id
diff --git a/sqlite3.c b/sqlite3.c
index 7f3bf21..5c77912 100644
--- a/sqlite3.c
+++ b/sqlite3.c
@@ -71,7 +71,7 @@ static int vita_xWrite(sqlite3_file *file, const void *buf, int count, sqlite_in
 static int vita_xSync(sqlite3_file *file, int flags)
 {
   vfs_file *p = (vfs_file*)file;
-  int r = sceIoSyncByFd(*p->fd);
+  int r = sceIoSyncByFd(*p->fd, 0);
   LOG("xSync %x, %x => %x\n", *p->fd, flags, r);
   if (IS_ERROR(r))
     return SQLITE_IOERR_FSYNC;