Clarify bootloader instructions

README.md

@@ -4,7 +4,6 @@ Hardware details and information to build an open firmware for Bluetooth LED bad
 
 ## Installation
 
-### Unix
 Install [wchisp](https://github.com/ch32-rs/wchisp?tab=readme-ov-file#installing).
 
 Download prebuilt binaries from [release](https://github.com/fossasia/badgemagic-firmware/releases) or [the latest development builds](https://github.com/fossasia/badgemagic-firmware/tree/bin).
@@ -17,12 +16,14 @@ the boot pin is pulled down in one of two ways:
 - Alternatively, connect the USB, press and hold KEY2, then short and release
   the C3 capacitor.
 
-Then check `dmesg` if the chip has entered the ISP mode with idVendor=4348 and
+If the badge has succesfully entered ISP mode, a single pixel roughly in the middle of the display will be lit. The badge will stay in ISP mode for approximately ten seconds before rebooting into normal mode.
+
+You can also check `dmesg` if the chip has entered the ISP mode with idVendor=4348 and
 idProduct=55e0.
 
 ![c3](assets/burn-badge.svg)
 
-Then run:
+With the badge in ISP mode, run:
 
 ```sh
 wchisp config reset
@@ -30,8 +31,8 @@ wchisp flash badgemagic-ch582.bin
 ```
 
 ### Windows
-Install and run [wchisp studio](https://www.wch-ic.com/downloads/WCHISPTool_Setup_exe.html)
-Connect the badge via USB and enter bootloader mode.
+On Windows, you have the option to install and run [wchisp studio](https://www.wch-ic.com/downloads/WCHISPTool_Setup_exe.html) instead of the wchisp CLI tool.
+Connect the badge via USB and enter bootloader mode, per the instructions above.
 
 The device will automatically appear in the UI.