@AdamHartley
Password recovery yes, that i imposible but, perhaps the title is misleading, what i need is a reinstall, config is not important.
It should be possible, but i am having some trouble doing it.
@F1ght3r
I have CRC checked the file on the drive and even downloaded and new and different file, but same result.
I am gonna try another USB pen, perhaps its not compatible, so i will try a new Sandisk USB.
I did exactly what what you recommend, but had no succes, as you can see i got some errors when i tried and i have no idea what they mean:
loader> install file:///junos.tgz
Target device selected for installation: internal media
/kernel data=0xba0974+0x152ba4 pkg_seek: negative file seek (-1362)
lseek failed
syms=[0x4+0xa0810+0x4+0xf0441]
If some one have a USB snapshot image from a new SRX345 or another suggestion i would be very grateful.