VoLTE on the Xperia 10 II - filling in the gaps

General
117

Oh thanks. So that is:

  1. devel-su
  2. cd /vendor/oem/modem-config/
  3. mkdir S8683.1
  4. cd S8683.1
  5. echo "mcfg_sw/generic/common/default/vl/global/mcfg_sw.mbn" > modem.conf

right?

And how would be the “back steps” like if i change provider/simcard, and want now to get back to the previous state? how to “rollback” that operation lets say?