SuperBus22

My DS412+ has been very dependable over the last 10 years. I ran into a certificate limitation with DSM 6.5 that was available in DSM 7 (ECC certificates) and that is what started the journey to DSM 7 on my DS412+. I'm trying to squeeze a little more life out of it. The only way I have been able to see the vender file is from mounting the 2nd boot partition of the DOM. Is there a way to extract the vender file directly from a PAT file? The vender file on my DS412+ appears encrypted. I don't see a checksum (grub_cksum.syno or grub_cksum.syno) that reference the vender file. I did remember #76, however when I upgraded from DSM 7.0 to DSM 7.1 I had to reenter those values manually as they did not persist. I believe moving to a 4 or 5 disk synology platform would alleviate that issue.

I was able to get my DS412+ running DSM 6 to upgrade as a DS713+ running DSM 7.1. Thanks for the assistance. Is there a way to upgrade my DS412+/DS713+ to RS814+? Since the official DS713+ has two disk drives when rebooting my synology it asks me to repair the system partition on drives 3 & 4 each time. It only takes a second to resolve but I think the RS814+ version would resolve that. I was able to get the DS412+ running as an RS814+ on the DSM 7.0.1 version but it fails when upgrading to DSM 7.1.x. I assume this has to do with the infamous vender file needing to be "vender_format_version=2". I need "vender_format_version=2" listed in the grub.cfg in various posts but it's unclear if I need to convert my current vender file to a version 2 vender and how to do that.

I am back on 6.2.4-25556 with the original drives, all data and configuration information is intact and available.

You are correct. It does currently boot to the web assistant, and detects the drives and is requesting I install a newer DSM. I believe at this point I select Reinstallation "Re-install diskstation and keep my data". Should I manually install the DSM 6.2.4-25556 Update 5 for DS412+ at this point and then try the DS713+ migration using Step #35 and change values in the /etc.defaults/synoinfo.conf file to: maxdisks="4" internalportcfg="0xf" ?

I may have created some scrap which is my fault. I created a backup of the DOM using 'dd if=/dev/sda of=~/DS412.img' before starting and also have a backup of the DSM configuration. I also mounted /dev/sda1 and /dev/sda2 and copied the files to an alternate location for backup. The DS412+ was working until I edited the /etc.defaults/VERSION from to and then shutdown the NAS in an attempt to downgrade to smallfix number 5 on the same build. The plan was to use Step 4 and trick the synology into allowing me to downgrade. It has not worked since. I restored the DS412.img back to the DOM but it boots for a few minutes, beeps, and the status light flashes yellow. I was able to flash a USB drive and set F400 as the PID and UID, then restored the DS412.img to the USB drive, removed the DOM, which also boots for a few minutes, beeps, and the status light flashes yellow. I attempted a Mode 2 reset but I was unable to get the three beeps mentioned in step 3. I have additional HDD's SSD's in both 2.5" and 3.5" format for additional steps if needed. Also a old DS112j is at my disposal that runs DSM 6.2.4-25556 Update 5 if that helps. I am unsure exactly what to do at this point. I'm surprised restoring the img to the DOM did not work.

@DSfuchs After reading this thread several times it looks like I can convert my DS412+ to appear as a RS814+ and upgrade to DSM 7+. My DS412+ is running DSM 6.2.4-25556 Update 6. I extracted the checksum.syno, grub_cksum.syno, zImage, and rd.gz from the DSM_RS814+_25556.pat as mentioned in post #35, rebooted the Synology which beeped and started flashing yellow. I took the flashing yellow light as the attempt did not work. Next I replicated the same steps using the DSM 7.0.1 version for the RS814+ with the same results. The previous posts mention a vender file on the 2nd partition which does exist currently on my DS412+ but it's unclear how to get a RS814+ version and modify it with my SN/MAC. Also there is mention in previous posts of "vender_format_version=2", where and how does that change take place? @7up_ You mention in post #57 that the current DS412+ image needs to be earlier than 6.2.4-25556 Update 6. Is it possible to downgrade from 6.2.4-25556 Update 6 to 6.2.4-25556 Update 5? Also @7up_ you mention in post #66 "1.EFI System.img." but I do not see that file in the DSM_RS814+_25556.pat? Am I missing something? I restored the backup and the DS412+ is working as expected on 6.2.4-25556 Update 6 but I would like to get to DSM 7. Any help is appreciated.