topic Re: IFR Program Once Read Command With Debugger in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/IFR-Program-Once-Read-Command-With-Debugger/m-p/538581#M33057 <HTML><HEAD></HEAD><BODY><P>Partly answered my own question.</P><P></P><P>Even if the debugger could not read that region,</P><P>If security is a concern, someone could issue a mass erase command and put their own program on their to read the IFR region themselves. So we will not be doing this. </P></BODY></HTML> Mon, 25 Jul 2016 18:34:46 GMT guitardenver 2016-07-25T18:34:46Z IFR Program Once Read Command With Debugger https://community.nxp.com/t5/Kinetis-Microcontrollers/IFR-Program-Once-Read-Command-With-Debugger/m-p/538580#M33056 <HTML><HEAD></HEAD><BODY><P><BR />Is there any way to read the program once IFR region with a debugger? Can the debugger tell the flash module to execute the Read Program Once Command (Assuming the device is un-secure)? For security reasons, external access to this region is unacceptable in our application. </P><P></P><P>MCU: MK22FN512</P><P>Debugger: Any</P><P></P><P>Thanks,</P></BODY></HTML> Mon, 25 Jul 2016 18:10:55 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/IFR-Program-Once-Read-Command-With-Debugger/m-p/538580#M33056 guitardenver 2016-07-25T18:10:55Z Re: IFR Program Once Read Command With Debugger https://community.nxp.com/t5/Kinetis-Microcontrollers/IFR-Program-Once-Read-Command-With-Debugger/m-p/538581#M33057 <HTML><HEAD></HEAD><BODY><P>Partly answered my own question.</P><P></P><P>Even if the debugger could not read that region,</P><P>If security is a concern, someone could issue a mass erase command and put their own program on their to read the IFR region themselves. So we will not be doing this. </P></BODY></HTML> Mon, 25 Jul 2016 18:34:46 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/IFR-Program-Once-Read-Command-With-Debugger/m-p/538581#M33057 guitardenver 2016-07-25T18:34:46Z Re: IFR Program Once Read Command With Debugger https://community.nxp.com/t5/Kinetis-Microcontrollers/IFR-Program-Once-Read-Command-With-Debugger/m-p/538582#M33058 <HTML><HEAD></HEAD><BODY><P>Some devices can disable the Mass Erase command.</P><P>Doing so may make a lot of 'Bricked' devices if things are not fully thought through...</P></BODY></HTML> Tue, 26 Jul 2016 12:06:27 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/IFR-Program-Once-Read-Command-With-Debugger/m-p/538582#M33058 bobpaddock 2016-07-26T12:06:27Z