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Agilent E7495 linux root account

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PrenticeManNY:
Hi everyone. I'm the proud owner of this instrument and recently discovered this thread. I've read through the entire post several times and have learned a great deal thanks to everyone's generous attitudes toward sharing their knowledge and experience.

My particular E7495 was running an ancient firmware of 1.60. Thanks to this forum I was able to easily obtain the now scarce 6.25 firmware package and had little trouble installing this once I got my hands on a compact flash card. The next step was dusting off my linux skills which are no where near as developed as the people in this thread but turned out to be adequate to transfer the required binaries and use a hex editor to manipulate them as described. I have hit a snag unfortunately. I have the same problem reported by another user where I am unable to navigate to the second page of system options due to a system hang when the more options soft key is pressed. I understand the cause of this, at least in that other poster's situation was due to his license file having no entries after "SIGN=".

I thought the solution for me would be that simple as well but it seems I have a unique problem here. My license file does not contain erroneous entries, in fact it seems to be missing information. I have re-installed the 6.25 firmware 2 times and then tried a third time with the recovery script method. This third time I tried a little experiment and modified the License file by changing the values of the populated features and then using the recovery script after moving the file to /flash/egServer/license/elgato.lic . After the update I checked the file and discovered apparently at least in my case this license file is not touched in the update process as my license file had the changes I had made in a hex editor.

I'm not sure how I ended up with what I suspect is a corrupted license file but here I am. I can go to the install license screen when I have a binary with the stock hex values in the 337A7C offset and see all the correct options (i.e. over the air EVDO and so on) but in my original license file these options aren't listed.

Can someone here please take the time when convenient to view my transferred License file and maybe share their thoughts on whether a license file from another machine has any hope of being transplanted into mine and confirm that my file is in fact somehow corrupted?


Thanks in advance to anyone who can spare some time to read all this and help me out! And if something I've done or tried to explain doesn't make sense then thanks too for your patience. I've attached the file as a .txt to meet the forums attachment requirement.

PA0PBZ:
Was there a value after the SIGN= in the original file? That is the key to unlock the feature together with the HOST string:

FEATURE 503 agilent 1.000 permanent uncounted \
        HOSTID=ID_STRING=12345678 SIGN=F1CE2A146BC6

The HOSTID is the ID of your instrument which is the same as in the file hostid in the same folder, and the SIGN is the key that was entered to activate the option.

Sometimes  there are some default entries in there that don't have a SIGN so normally they do nothing. But when the patch is applied they all start to work...
Also, I see a hex "F0" value behind the sign for option 210 which I'm sure does not belong there, and a lot of hex "00" in every SIGN=



Try to put 12 digits (0-F) after every SIGN= and try again.

PrenticeManNY:
Thanks for the reply, I just realized I mistakenly uploaded the file I had tried to modify which explains the FO entry you pointed out. I tried entering 00 in the fields after sign and must have missed that one. Just to clarify, any value can exist after these entries? obviously if I screw up the correct formatting by entering information into the wrong field as I've done here that matters. But by putting say 00 A1 B1...etc into the field or all 00 00 00 entries as I tried here that is how I fix the file?

Sorry to be dense, I'm struggling a little determining how exactly the file should look....

PA0PBZ:
Yes you can pick any value(s) for the SIGN= string, the patch disables the check on this value. However, I think that invalid values or length can still do strange things, I don't remember if there was any other checking on this value when I created the patch long ago. In any case, don't use HEX 00 values or other unreadable stuff in there but use 12 characters from '01234567890ABCDEF'.

[Edit]

I don't see anything wrong with your license file apart from the fact that the last option (240) is missing the SIGN= entry, this could well be the problem.
It looks like it contains the following options:

200=CDMA / CDMA 2000 Analyzer
210=CDMA Over Air Test
220=Channel Scanner
240=W-CDMA Analyzer


PrenticeManNY:
I've just edited the elgato.lic file to include the last sign= portion that was missing. Thank you for finding that missing portion and helping me to fix my mistake. This as you likely already knew has fixed the menu option issue and I can now install all options. I've learned a good amount reading this thread and for that I'm forever grateful.

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