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<?xml-stylesheet type="text/xsl" href="https://community.arm.com/utility/feedstylesheets/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>Problem un-securing Freescale KEA chip using ULINK2</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/34788/problem-un-securing-freescale-kea-chip-using-ulink2</link><description> 
The issue: I need to try twice to flash my Freescale chip to be
able to reprogram it once it has been secured. 

 
The issue occurs after I flash the chip with the flash security
register value: 0x01xxxx01 (flash secure, no backdoor key). 

 
My setup</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: Problem un-securing Freescale KEA chip using ULINK2</title><link>https://community.arm.com/thread/82920?ContentTypeID=1</link><pubDate>Sun, 24 Jul 2016 05:58:24 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:d2d20dce-d86d-43a7-b756-26440785d04d</guid><dc:creator>nishant Pashine</dc:creator><description>&lt;p&gt;&lt;p&gt;
For MK20DX2561VLH7 I tried what you said but it didn&amp;#39;t worked.&lt;br /&gt;
Kindly help.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Problem un-securing Freescale KEA chip using ULINK2</title><link>https://community.arm.com/thread/64304?ContentTypeID=1</link><pubDate>Thu, 19 Nov 2015 07:10:21 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:35059d55-6db4-4512-8e44-9e023b70977d</guid><dc:creator>Tibor Rafa</dc:creator><description>&lt;p&gt;&lt;p&gt;
Hi,&lt;/p&gt;

&lt;p&gt;
Some time ago we had a similar problem with a same type of &amp;quot;Cannot
access memory&amp;quot; error, just different memory location.&lt;br /&gt;
This happened when we try to reprogram a Freescale Kinetis devices
K2x, K6x with protection already set to ON.&lt;br /&gt;
In our cases the &amp;quot;under reset&amp;quot; with &amp;quot;HW reset&amp;quot; solve the problem of
mass erasing without error message (just a warning that mass erase is
needed).&lt;/p&gt;

&lt;p&gt;
Before that solution was found (try-and-error) we find an another
one:&lt;br /&gt;
Under Flash Download : Download Function chose the Erase Sectors
instead Erase Full Chip.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>