Hi. Yes, the preinit* files had read/exec permission in both cases, and the distribution of OS/partitions is the one you mentioned. I changed all permissions to 777 for both files, just in case :P In one of the attempts I made, the message of 'Maintenance boot' was displayed, afterwards I saw some modified files (depmod,insmod, modprobe, lsmod and others according to their modification/access dates) at /sbin in Sailfish partition. I was trying something I've read Coderus wrote: tapping several times after selecting the sailfish icon. Regarding the HW revision I think there's not much to add, but would explain the fact that none of the OSs is booting in 2nd stage (i.e: after ubiboot kernel) The ubiboot.conf file I think is the original one, without modifications. Regards.