Update UPGRADE.md

Author: PaulZC

UPGRADE.md

@@ -7,8 +7,8 @@ Which is handy if you want to quickly update the firmware in the field, or are n
 
 The firmware is customized for the different versions of the OLA hardware. You will find versions for the **X04 SparkX (Black) OLA** and **V10 SparkFun (Red) OLA** plus any subsequent revisions. The filename tells you which hardware the firmware is for and what version it is:
 
-* **OpenLog_Artemis-V10-v111.bin** - is the _stable_ version for the **V10 SparkFun (Red) OLA**
-* **OpenLog_Artemis-X04-v111.bin** - is the _stable_ version for the **X04 SparkX (Black) OLA**
+* **OpenLog_Artemis-V10-v20.bin** - is the _stable_ version for the **V10 SparkFun (Red) OLA**
+* **OpenLog_Artemis-X04-v20.bin** - is the _stable_ version for the **X04 SparkX (Black) OLA**
 
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@@ -26,7 +26,7 @@ The firmware is customized for the different versions of the OLA hardware. You w
 
 ## To use:
 
-* Download and extract the [OLA repo ZIP](https://github.com/sparkfun/OpenLog_Artemis/archive/master.zip)
+* Download and extract the [OLA repo ZIP](https://github.com/sparkfun/OpenLog_Artemis/archive/main.zip)
 * Download and extract the [AFU repo ZIP](https://github.com/sparkfun/Artemis-Firmware-Upload-GUI/archive/master.zip)
 * Run the AFU artemis_firmware_uploader_gui executable for your platform
   * **/Windows** contains the Windows .exe