I have been using 89C51RC+IA/JA controllers for some years. No problem programming them on a Hi-Lo ALL-11 programmer (parallel mode). As the RC+ is discontinued, I now use the RC2. I can program them on my ALL-11 but it's not possible to change the boot-vector.
At Hi-Lo systems I don't get anywhere, uploaded the latest software update but without any result. Anyone has a similar experience and/or knows a work-around (other than using ISP programming)?