Update README.md

Closes #193

Author: MCUdude

README.md

@@ -54,7 +54,7 @@ Make sure you connect an ISP programmer, and select the correct one in the "Prog
 
 You might experience upload issues when using the internal oscillator. It's factory calibrated but may be a little "off" depending on the calibration, ambient temperature and operating voltage. If uploading failes while using the 8 MHz internal oscillator you have these options:
 * Edit the baudrate line in the boards.txt file, and choose either 115200, 57600, 38400 or 19200 baud.
-* Upload the code using a programmer (USBasp, USBtinyISP etc.) or skip the bootloader by holding down the shift key while clicking the "Upload" button
+* Upload the code using a programmer (USBasp, USBtinyISP etc.)
 * Use the 4, 2 or 1 MHz option instead
 
 | Frequency   | Oscillator type             | Comment                                                       |
@@ -80,7 +80,7 @@ You might experience upload issues when using the internal oscillator. It's fact
 
 ## Bootloader option
 MiniCore lets you select which serial port you want to use for uploading. UART0 is the default port for all targets, but ATmega328PB can also use UART1.
-If your application doesn't need or require a bootloader for uploading code you can also choose to disable this by selecting *No bootloader*. This frees 512 bytes of flash memory.
+If your application doesn't need or require a bootloader for uploading code you can also choose to disable this by selecting *No bootloader*. This frees 512 bytes of flash memory. Unline official Arduino AVR boards, the bootloader isn't automatically removed when you upload using a programmer. You'll have to select *No bootloader* hit "upload" or the "burn bootloader" for this to happen.
 
 Note that you have need to connect a programmer and hit **Burn bootloader** if you want to change any of the *Upload port settings*.