Update README.md

README.md

@@ -24,6 +24,8 @@ I suggest you to use the excellent **[s-tui](https://github.com/amanusk/s-tui)**
 ### Undervolt
 The tool supports **undervolting** the CPU by configuring voltage offsets for CPU, cache, GPU, System Agent and Analog I/O planes. The tool will re-apply undervolt on resume from standby and hibernate by listening to DBus signals. You can now either use the `UNDERVOLT` key in config to set global values or the `UNDERVOLT.AC` and `UNDERVOLT.BATTERY` keys to selectively set undervolt values for the two power profiles.
 
+**===== Notice that undervolt is typically locked from 10th gen onwards! =====**
+
 ### IccMax (EXPERTS ONLY)
 The tool now supports overriding the **IccMax** by configuring the maximum allowed current for CPU, cache and GPU planes. The tool will re-apply IccMax on resume from standby and hibernate. You can now either use the `ICCMAX` key in config to set global values or the `ICCMAX.AC` and `ICCMAX.BATTERY` keys to selectively set current values for the two power profiles. **NOTE:** the values specified in the config file are the actual current limit of your system, so those are not a offset from the default values as for the undervolt. As such, you should first find your system default values with the `--monitor` command.