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cannot flash 3 new tms320f2809

Other Parts Discussed in Thread: UNIFLASH

Hello,

i am trying to flash 3 new 2809 with ccs v5.3 via xds100v2. All of the µc i have bought from farnell.de (Ti Distrbuter)in Germany.

I can program to SARAM (2809) and my program worked too. 

In addition i have one olimex28016 here and i can write my program to flash(28016) this without problems.

But i cant flash the same Programm to 2809.

i receive Failur "ERROR >> C28xx: Flash Programmer: Error unlocking flash memory. Device is still locked",

i havent never used this µCs before. i read Forum and  i have tried to use "uniflash" to lock and unlock the µCs . i received alwasy the same Error. Had anyone the same problem?have anyone an Idea?

Thanks,

Aman