/* Shut down the USB and other board hardware drivers */
        USB_Disable();
        LEDs_Disable();
+       
+       /* Disable Bootloader active LED toggle timer */
+       TIMSK1 = 0;
+       TCCR1B = 0;
 
        /* Relocate the interrupt vector table back to the application section */
        MCUCR = (1 << IVCE);
        {
                uint32_t CurrFlashAddress = 0;
 
-               while (CurrFlashAddress < BOOT_START_ADDR)
+               while (CurrFlashAddress < (uint32_t)BOOT_START_ADDR)
                {
                        /* Check if the current byte is not blank */
                        #if (FLASHEND > 0xFFFF)
                uint32_t CurrFlashAddress = 0;
 
                /* Clear the application section of flash */
-               while (CurrFlashAddress < BOOT_START_ADDR)
+               while (CurrFlashAddress < (uint32_t)BOOT_START_ADDR)
                {
                        boot_page_erase(CurrFlashAddress);
                        boot_spm_busy_wait();