According to my tests you have to be in a Swisscom (customer) network to download firmware images.
These files can be downloaded from http://rmsdl.bluewin.ch/pirelli/<filename>.
The mirror on tuxone.ch contains some additional versions which aren't available anymore.
- ftp://ftp.tuxone.ch/Pirelli/Gen6
| filename | magic | version | date | board |
|---|---|---|---|---|
| Vx226N1_current_epicentro_release.sig | yIMG | 6.14.00R | 2014-10-30 11:46 | 96368_Swiss_S1 |
| Vx226x1_60202.sig | yIMG | 6.02.02R | 2012-12-06 15:42 | 96368_Swiss_S1 |
| Vx226x1_60204.sig | yIMG | 6.02.04R | 2013-01-29 12:31 | 96368_Swiss_S1 |
| Vx226x1_60206.sig | yIMG | 6.02.06R | 2013-02-20 15:43 | 96368_Swiss_S1 |
| Vx226x1_60208.sig | yIMG | 6.02.08R | 2013-03-15 00:33 | 96368_Swiss_S1 |
| Vx226x1_60212.sig | yIMG | 6.02.12R | 2013-07-05 16:38 | 96368_Swiss_S1 |
| Vx226x1_60214.sig | yIMG | 6.02.14R | 2013-11-07 16:09 | 96368_Swiss_S1 |
| Vx226x1_61000.sig | yIMG | 6.10.00R | 2013-12-19 19:06 | 96368_Swiss_S1 |
| Vx226x1_61200.sig | yIMG | 6.12.00R | 2014-01-20 16:46 | 96368_Swiss_S1 |
| Vx226x1_61202.sig | yIMG | 6.12.02R | 2014-09-25 20:01 | 96368_Swiss_S1 |
| Vx226x1_61204.sig | yIMG | 6.12.04R | 2014-11-05 17:09 | 96368_Swiss_S1 |
| Vx226x1_61400.sig | yIMG | 6.14.00R | 2014-10-30 11:46 | 96368_Swiss_S1 |
| Vx226x1_61404.sig | yIMG | 6.14.04R | 2015-09-22 11:10 | 96368_Swiss_S1 |
| Vx226x1_61406.sig | yIMG | 6.14.06R | 2015-09-23 18:00 | 96368_Swiss_S1 |
A thank you to Antoine Albertelli who made a great github repo on his findings.