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Mychaela Falconia mychaela.falconia at gmail.comHi Vadim, > thanks for your detailed report, I have submitted a bugfix: > > https://git.osmocom.org/sim/sim-tools/log/?h=fixeria/fixes LGTM. > Please let us know if it works for you, so we'll merge it to master. I have tested the PoC test_rfm() function in your new version, and it now emits packets that are 8 bytes shorter than before, matching what my own ota-smswrap-sjs1 C-language utility generates. The new way works with both sysmoUSIM-SJS1 and sysmoISIM-SJA2, using each card's respective different keys from webshop emails. KIC2 and KID2 are the keys needed for this operation. Please note, however, that the only feature of shadysim.py I ever tested (both before and after your fix) is the test_rfm() function which can only be exercised by editing the code to uncomment the two lines that invoke it and exit - there is no command line option for this function, which itself is of course nothing more than a PoC. I have never exercised this program's main intended function of manipulating Java card applets - at the present moment I have no need for those, and I don't know when (if ever) I will get to play with STK and Java applets for it - right now there are too many other areas of GSM that are more interesting to me. :) > I hope you don't mind that I copy-pasted some sentences from your > original message into the commit description. Sure thing - technical knowledge is meant to be shared and reproduced in different media and fora. In other SIM card news, it looks like Grcard folks (back from their LNY holidays) are reshipping their sample cards to me via a different route (going through HK this time), thus there is a chance that I might finally receive them this week or the next. I am very anxious to find out if they are the same card platform as the short-lived sysmoSIM-GR2, or if it's a newer evolutionary revision given how many years have passed - given that they once made the evolutionary change from GR1 to GR2, we have every reason to expect that other evolutionary changes have followed since then. One of the features I hope to see included on these new cards is RFM - I will be perfectly fine with a non-Java card with no ability to install applications, but I do desire RFM - being able to write the MSISDN record OTA like real operators do is just so cool! Would anyone happen to know if the short-lived historical sysmoSIM-GR2 cards supported RFM or not? I reason that GR1 cards probably lacked this feature, but I do wonder about GR2. In hacking fellowship, Mother Mychaela