So grateful to the people who have been working on this.
Here is my experience to share with inexperienced people like me.
Started with an SSA3021X (no plus) equipped with a FW 2.1.1.3R1.
I managed to get the full 3.2GHz but did something wrong at one point since I ended up with 6 additional options (DMA, AMA, WDMA, DTF, VNA, RT40). (Yes I know I sucked, don't blame me anymore than I did
) I could access the additional modes like VNA and DTF but functions appeared not to be working properly (plus freeze when getting back to SA mode). S/N was X'd.
Wanted to revert everything to its original state but couldn't do it. Technical support kindly sent me a package for an SSA3021X to 'reset' everything (16Mo package to fit on a USB key). I did use it but did not change anything visible. I believe it did not work because the model was now indicating SSA3032X.
Finally used the SPCI command :SRLN to set my serial number, knowing that it would undo the hack. I restarted and used the python script and voila : successfully transformed a recently purchased SSA3021X (no plus) already equipped with a FW 2.1.1.3R1 into an SSA3032X with all 4 options : AMK, EMI, TG (already permanent) and Refl and kept the S/N. Pfeeeewww !!!!
I have not read it in the various posts but want to ask it to be sure : has anybody succeeded in upgrading from SSA3021X(non plus) to SSA3032X and then into an SVA1032X ? Do you believe it can be done ? All I have read was for the + versions.