Lpc2000

--- In lpc2000@yahoogroups.com, "Hugh O'Keeffe" <hugh.okeeffe@a...> wrote:
> 64-pin/128-pin LPC2000 devices with a Boot Loader ID >= 1.6 have flash
> Read Protection. Ashling users can can check your device's ID using
> FlashLPC (I think the Philips ISP programmer supports this as well).
> Code read protection is enabled by programming the flash address
> location 0x1FC (User flash sector 0) with value 0x87654321. If Read
> Protection is enabled then the device has to be fully erased (thus
> disabling Read Protection) before it can be re-programmed. We're
> currently adding support for this in our tools; further announcements
> shortly. 
>  
> BTW, use this information at your own risk. Philips Applications will be
> making "official" announcements shortly.

If I understand how this will work, field upgrades will be impossible?
 It seems very risky to me to blow away a working version of a program
before loading new code into a system in the field.  Even then this
will require a user to know enough about the tools to upload the new
software.  I have not heard how this is done.  Is there a serial port
programming utility like OKI has in the Boot ROM?