Having downgraded IOS15 using Trucha Bug Restorer MOD (I have 4.2E, and regular TBR froze), I was about to launch it again to install a patched IOS36. I realized I had the wrong version of IOS36 (I needed 3351 and I had 3094, again because I used TBR MOD and not regular and because I have 4.2E)...