you seem to know what you are doing so maybe you could help me to understand the protection mechanisms of the Synology DSM 6.
I have a DS710+ (2 bay Intel Atom D410) which does not get any further updates beyond DSM 5.x (5592). I was able to create a pat file to install DSM 6.0 (7321) by just changing the update file for the DS712+ (2 bay Intel Atom D425). I just changed the synoinfo.conf, scemd.conf and manutil.conf according to what I found in the latest DS710+ update and after repacking I was able to update my box to DSM 6.0 version 7321 (and also the subsequent updates to patchlevel 7).
With the same method I was able to create an update file for DSM 6.0.2 version 8451, however now I have the same problems as others reportet here that have accidentially updated to 6.0.1 (7393) or 6.0.2 (8451): existing volumes are gone and cannot be mounted and I cannot create new volumes. I did a little research but I have no clue how I could get around the protection. For example the devices nodes for sda are not created under /dev so scemd complains about not able to access /dev/sda. If I login via ssh and create them with mknod they exist for a while but as soon as I log into the Web UI or only reload it they are gone again.
Do you know if there is documentation about how the protection mechanism works or could you maybe give me some hints how I could make it work? Maybe even your kernel mode dynamic patcher could help me with this? I would appreciate it if you could give me some help.