diff --git a/firmware/application/usb_serial_asyncmsg.hpp b/firmware/application/usb_serial_asyncmsg.hpp
index 35ed7565f..da7fe7baf 100644
--- a/firmware/application/usb_serial_asyncmsg.hpp
+++ b/firmware/application/usb_serial_asyncmsg.hpp
@@ -47,10 +47,8 @@ class UsbSerialAsyncmsg {
 };
 
 /*Notes:
- * - Don't use MayhemHub since it currently not support real time serial output
- * - If you don't use this class linker will drop it so it won't use any space
- * - so delete all debug things before you push your code to production
- * - use this client to filter only PP devices: https://github.com/zxkmm/Pyserial-Demo-portapack
+ * - Don't use MayhemHub since it's currently not supporting real time serial output (it's hiding some instructions to support some features like screenshot, and it's filtering out answers by response type)
+ * - use this client to debug with serial: https://github.com/portapack-mayhem/mayhem-cli
  * - usage:
  *        portapack::async_tx_enabled = true; // note that use this when debugging, unless the msg would be forbidden. but don't use this in production, since it's not real async and multiple serial transmittions will broken each other. if this class is used in other scene in the future, just use command to cover (protect your serial tramsnitton) in your extern thing: asyncmsg enable --- your cmd --- asyncmsg disable
  *        #include "usb_serial_asyncmsg.hpp"