So, after looking at all your reports (thanks), i think it may be usefull to downgrade browser and homemenu last. I did modify safeSysUpdater for this. Here is the last 3 dowgraded files :
0004013820000002 (NFIRM) : v.23341 -> v.17120 -> DONE
0004003020009d02 : v.6144 -> v.10 -> DONE
0004003000009802 : v.24576 -> v.12288 -> DONE
Does someone with the knowledge/hardmod or better a device/version which was crashing can test this new version ? It will probably crash on latest title but since it's homemenu and since it should be installed correctly, the downgrade should work.
DO NOT USE IT IF YOU DON'T KNOW WHAT YOU ARE DOING