It does not kill ecu. EDC17c60 works fine after manual change tprot. You need to disable Tport manually.

Our customers have made a few on bench and no problem. Only had to make tprot off with hex or OLS.

If don’t disable Tport manually, car doesn’t start after write flash.

Here is the reason:

This is a known problem of original pcmflash v1.20.  PCMTuner 1.20 does not know how to bypass PSA protection at the moment.

pcmflash 1.21 corrects the problem with patch. Apparently with the current version you have to manually edit the otp area before writing.

you need to manually edit tprot off,

This is fix for DTC to try
2CDB78 => 0000 => 2CDB7C
Patch for write protection

There is also third-party software for tprot off and immo off, i,e Multi Remover Tool