Please could somone confirm the current issue of the T89C51RD2 datasheet. I downloaded it again from the Atmel website a couple of days ago to make sure it was up to date and it is Rev. F-15 February 2001, but the website shows it as last updated on Feb 2002. My copy has no reference to removing the low on PSEN in the "Hardware activiation of the bootloader" section on P.56 and I'm beginning to suspect it may not be the current issue.