I took a quick look at the top2049 software earlier and I did not see where it was doing anything with the fuses other than write protect. I may have missed something?
Here are the config settings I am using for a 4550. The resonator I have connected is a 4Mhz.
Code:
DEFINE OSC 48
@ __CONFIG _CONFIG1L, _PLLDIV_1_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
@ __CONFIG _CONFIG1H, _FOSC_HSPLL_HS_1H
@ __CONFIG _CONFIG2H, _WDT_OFF_2H & _WDTPS_512_2H
@ __CONFIG _CONFIG3H, _PBADEN_OFF_3H & _MCLRE_OFF_3H
@ __CONFIG _CONFIG4L, _LVP_OFF_4L & _ICPRT_OFF_4L &_XINST_OFF_4L
Also you may find this useful.
http://www.picbasic.co.uk/forum/showthread.php?t=543
If you post your code and configs it will help.
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