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38<h1>Release Notes for OpenPower Firmware v2.0.7<a class="headerlink" href="#release-notes-for-openpower-firmware-v2-0-7" title="Permalink to this headline">ΒΆ</a></h1>
39<p>op-build v2.0.6 was released on Friday August 3rd, 2018 and replaces op-build v2.0.6 as the current stable release in
40the 2.0.x series.</p>
41<p>It is recommended that v2.0.7 be used over any previous v2.0.x version on POWER9 systems due to the bug fixes contained within.</p>
42<p>The only update in this release is to skiboot v6.0.7 to work around a hardware errata in the interrupt controller on POWER9.</p>
43<p>The bug fix is:</p>
44<ul>
45<li><p class="first">xive: Disable block tracker</p>
46<p>Due to some HW errata, the block tracking facility (performance
47optimisation for large systems) should be disabled on Nimbus chips.
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