Just wanted to add comment on Batch 2 Z9 minis.
My batch 2 Z9 minis (arrived today) have the drop down box to choose frequency. It has all the same frequencies as my batch 1 Z9 mini.
The only issue is that they are not steady when overclocking to 700 frequency like batch 1. The highest they will go without pooping out is 668 frequency.
Mine is running fine at 675. I also tried 700 and it ran for a few minutes and then one single board would stop completely. My temp at 61C and getting 14.9 average
All mine has under frequency is balance. Do I have to downgrade the firmware?
My recent arrivals also came showing balance so I used ssh to get in, found the changed file, compared it to my older units and changed the html to match. I used built in vi as the editor. Worked like a charm.
The file is "minerAdvanced.cgi" and the changes happen after line #225. Here is what I did. If you know Linux and can follow vi.....
vi /www/pages/cgi-bin/minerAdvanced.cgi
:226,252d
then I copied and pasted the code for the frequency drop down (show below) to the end of the file just before EOT and saved the file when done with esc :x ....
<option value="0"> Default setting </option>
<option value="100"> 100M </option>
<option value="125"> 125M </option>
<option value="150"> 150M </option>
<option value="175"> 175M </option>
<option value="200"> 200M </option>
<option value="225"> 225M </option>
<option value="250"> 250M </option>
<option value="275"> 275M </option>
<option value="300"> 300M </option>
<option value="325"> 325M </option>
<option value="350"> 350M </option>
<option value="375"> 375M </option>
<option value="400"> 400M </option>
<option value="404"> 404M </option>
<option value="406"> 406M </option>
<option value="408"> 408M </option>
<option value="412"> 412M </option>
<option value="416"> 416M </option>
<option value="418"> 418M </option>
<option value="420"> 420M </option>
<option value="425"> 425M </option>
<option value="429"> 429M </option>
<option value="431"> 431M </option>
<option value="433"> 433M </option>
<option value="437"> 437M </option>
<option value="441"> 441M </option>
<option value="443"> 443M </option>
<option value="445"> 445M </option>
<option value="450"> 450M </option>
<option value="454"> 454M </option>
<option value="456"> 456M </option>
<option value="458"> 458M </option>
<option value="462"> 462M </option>
<option value="466"> 466M </option>
<option value="468"> 468M </option>
<option value="470"> 470M </option>
<option value="475"> 475M </option>
<option value="479"> 479M </option>
<option value="481"> 481M </option>
<option value="483"> 483M </option>
<option value="487"> 487M </option>
<option value="491"> 491M </option>
<option value="493"> 493M </option>
<option value="495"> 495M </option>
<option value="500"> 500M </option>
<option value="504"> 504M </option>
<option value="506"> 506M </option>
<option value="508"> 508M </option>
<option value="512"> 512M </option>
<option value="516"> 516M </option>
<option value="518"> 518M </option>
<option value="520"> 520M </option>
<option value="525"> 525M </option>
<option value="529"> 529M </option>
<option value="531"> 531M </option>
<option value="533"> 533M </option>
<option value="537"> 537M </option>
<option value="543"> 543M </option>
<option value="550"> 550M </option>
<option value="556"> 556M </option>
<option value="562"> 562M </option>
<option value="568"> 568M </option>
<option value="575"> 575M </option>
<option value="581"> 581M </option>
<option value="587"> 587M </option>
<option value="593"> 593M </option>
<option value="600"> 600M </option>
<option value="606"> 606M </option>
<option value="612"> 612M </option>
<option value="618"> 618M </option>
<option value="625"> 625M </option>
<option value="631"> 631M </option>
<option value="637"> 637M </option>
<option value="643"> 643M </option>
<option value="650"> 650M </option>
<option value="656"> 656M </option>
<option value="662"> 662M </option>
<option value="668"> 668M </option>
<option value="675"> 675M </option>
<option value="681"> 681M </option>
<option value="687"> 687M </option>
<option value="693"> 693M </option>
<option value="700"> 700M </option>
<option value="706"> 706M </option>
<option value="712"> 712M </option>
<option value="718"> 718M </option>
<option value="725"> 725M </option>
<option value="731"> 731M </option>
<option value="737"> 737M </option>
<option value="743"> 743M </option>
<option value="750"> 750M </option>
</select>
</div>
</div>
</fieldset>
<br />
</fieldset>
<br />
</div>
<div class="cbi-page-actions">
<input class="cbi-button cbi-button-save right" type="button" onclick="f_submit_miner_conf();" value="Save&Apply" />
<input class="cbi-button cbi-button-reset right" type="button" onclick="f_get_miner_conf();" value="Reset" />
</div>
<div class="clear"></div>
</div>
</div>
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