If that console have a NAND backup, you can still using hardmod to restore it, even A9LH is removed, no matter FW version, like @Crystal the Glaceon said.It used to be one of the two ways to downgrade consoles with FW 11.0-11.2, or to unbrick consoles by flashing nand backups.
Considering how far the 3ds hacking scene has come, there's no reason to hardmod now because:
1. All FW <= 11.2 can install CFW without hardmodding
2. FW 11.3 can't be downgraded even with hardmod.
Not to mention that Hardmods don't even work on 11.3 :\There's no need. Most bricks can be recovered with a9lh by restoring a backup with Hourglass9. If you find yourself in a situation where Hourglass9 can't do it, install the hardmod then. How silly would you feel if you killed your console installing an unnecessary hardmod when you still had a perfectly working console? Or if you screwed up the WiFi card or some buttons and the console no longer worked properly? Better to wait until that's the only choice. Then if you screw up your console you didn't just lose a perfectly working one.
It still works for NAND restoration. But I agree that we only should use it as last resort.Not to mention that Hardmods don't even work on 11.3 :\
I heard that they don't work at all, they work for NAND restoration?It still works for NAND restoration. But I agree that we only should use it as last resort.
Yup, as long as you have NAND backup of those console.I heard that they don't work at all, they work for NAND restoration?
Okay, so it still has it's uses... That's good to know....Yup, as long as you have NAND backup of those console.
Hardmod NFIRM downgrade didn't work not because Nintendo block hardmoding, but the result of 11.3 Home Menu require Lastest NFIRM version.