So I lost power to my 994i a couple days ago. I noticed that a device was on today that should have been off.

I've been trying to stay connected to the unit all evening, and am getting nowhere. Well not totally.

First, I discovered that I did an upgrade for the zwave500 series board and shouldn't have.

I downgraded to 5.0.16, but this didn't do anything.

I keep getting java connection refused errors. Ive cleared cache about 10 times, I've uninstalled and reinstalled java.

It looks to me like the ISY is rebooting continually.

I can get logged in but only for a few minutes, here's a snip of the log file:

I've tried restoring from a couple different saved configurations.

If anyone has any suggestions, I'll try them....

Thanks in advance...

Tue 2026/07/07 10:52:04 PM System -5 Start

Tue 2026/07/07 10:52:09 PM System -110022 /DEF/F6/I1/NLS/EN_US.TXT

Tue 2026/07/07 10:52:10 PM System -110022 /CONF/UXT.BIN

Tue 2026/07/07 10:52:10 PM System -110012 /CONF/UXT.BIN

Tue 2026/07/07 10:52:12 PM System -110022 /CONF/UZWNDKEY.TXT

Tue 2026/07/07 10:52:12 PM System -110012 /CONF/UZWNDKEY.TXT

Tue 2026/07/07 10:52:12 PM System -170001 [Network] Established

Tue 2026/07/07 10:52:12 PM System -60006 n/a

Tue 2026/07/07 10:54:07 PM System -5 Start

Tue 2026/07/07 10:54:12 PM System -110022 /DEF/F6/I1/NLS/EN_US.TXT

Tue 2026/07/07 10:54:13 PM System -110022 /CONF/UXT.BIN

Tue 2026/07/07 10:54:13 PM System -110012 /CONF/UXT.BIN

Tue 2026/07/07 10:54:15 PM System -110022 /CONF/UZWNDKEY.TXT

Tue 2026/07/07 10:54:15 PM System -110012 /CONF/UZWNDKEY.TXT

Tue 2026/07/07 10:54:15 PM System -170001 [Network] Established

Tue 2026/07/07 10:55:31 PM System -170001 [UDSockets] SMTP:31 error:6

Tue 2026/07/07 10:55:58 PM System -5 Start

Tue 2026/07/07 10:56:03 PM System -110022 /DEF/F6/I1/NLS/EN_US.TXT

Tue 2026/07/07 10:56:04 PM System -110022 /CONF/UXT.BIN

Tue 2026/07/07 10:56:04 PM System -110012 /CONF/UXT.BIN

Tue 2026/07/07 10:56:06 PM System -110022 /CONF/UZWNDKEY.TXT

Tue 2026/07/07 10:56:06 PM System -110012 /CONF/UZWNDKEY.TXT

Tried the ole trick of taking out the SD card, cleaning the contacts with an eraser, and putting it back in?

@N8N aside from possibly cleaning the SD card it could need to be replaced. There are instructions for replacing the SD card in the UD Wiki.

Your "-110022" error seems to indicate that files cannot be opened (info from wiki for error meanings). The SD card can fail. Do you have a "recent" backup? Part of replacing the SD card is restoring from a backup so you don't have to recreate everything.

If you're able to get into the system for longer than a few minutes look at your programs -> summary tab. See if you have a looping program. Sometimes the "Query on Start" is checked. If you have a large system the query could be overwhelming the system as it boots.

Last thing I would suggest checking is the power supply. Those are also known to fail. I'm not sure if it would really cause your issues, but very well could be an issue.

For the java issues what computer OS are you using?

I agree it maybe the power supply. Though your post seems to point more to the SD card. Maybe it got slightly corrupted at power loss or the accidental incorrect ZWave file messed something up.

I have had a few over the years. One was weak and my ISY994i was fine until the power went out and then it refused to start. Just a loop of trying to boot, supply shut down and then it tried again.

ok, I can't honestly remember my last sequence of restoring last night - I wasn't getting a stable result, and I was preparing to run through all the steps again tonight. Tonight though, I've been in and not interrupted so far, so here's some details if anyone finds it useful later:

I found a 4 Gb SD card and went through the new SD card instructions - first I (quick) formatted the card to the default file system

I had to remove the bottom cover because the sd card holder is too close to the leds and out of position in the slot opening.

I also had to figure out after reading, that there's a hidden screw under the product id sticker - d'oh.

Then I used putty to run telnet into the 994i, and ran the FS command.

I then followed more instructions to load a new installation of 5.0.16c

Then I tried restoring from a latest backup 5.3.4. I'm not confident that this worked to be honest as I was still getting random flakiness, and a missing lib error with an ok pop up.

I believe I restored from a 4.9.0 version from last year and still got flakiness, so I tried restoring from 5.3.4 one last time and then ran a backup.

Then I ran a restore from the version 5.0.16c zip file that was created. I was thinking this way, the missing files might be created by having a backup from the same version.

I'm still getting missing files errors in the log

Wed 2026/07/08 06:35:41 PM System -110022 /DEF/F1/I1/NLS/EN_US.TXT

Wed 2026/07/08 06:35:41 PM System -110022 /DEF/F4/I1/NLS/EN_US.TXT

Wed 2026/07/08 06:35:41 PM System -110022 /DEF/F6/I1/NLS/EN_US.TXT

Wed 2026/07/08 06:35:41 PM System -110022 /CONF/UXT.BIN

Wed 2026/07/08 06:35:41 PM System -110012 /CONF/UXT.BIN

Wed 2026/07/08 06:35:41 PM System -110022 /WEB/ELKNLS.XML

Wed 2026/07/08 06:35:43 PM System -110022 /CONF/UZWNDKEY.TXT

Wed 2026/07/08 06:35:43 PM System -110012 /CONF/UZWNDKEY.TXT

Wed 2026/07/08 06:35:43 PM System -170001 [Network] Established

Wed 2026/07/08 06:36:46 PM System -50001 -20

Wed 2026/07/08 06:44:05 PM System -110022 /WEB/DRIVER.XML

Wed 2026/07/08 06:44:05 PM System -110022 /WEB/DRIVER.XML

Thu 2026/07/09 02:08:48 PM System -110022 /WEB/DRIVER.XML

Thu 2026/07/09 02:08:48 PM System -110022 /WEB/DRIVER.XML

When running the UUID launcher, I can only get a login prompt by choosing the Cloud connection, using LAN gets no response.

I also rotated the barrel of the power supply a few times as I plugged it in and unplugged it a few times.

I can't say for sure what created the problem. I was able to navigate to the SD card within windows and use it ok, but maybe the contacts were roughed up enough by the card reader. I'm slightly more tempted to say it was the power plug as I believe the status lights weren't steady

Java seems to be behaving, no disconnects while I've typed out this info. I'm using win 11 with edge and the latest updates.

Thanks for helping!

I'll post an update if there's any changes.

nm

When I run start.jnlp I can still only get action when I launch the cloud access version of admin access.

Also, I get an error pop-up of error "lib_errors-403" that I have to check ok for, then I have to wait a while for "initialization" to finish. I don't recall it taking as long to be ready before as it is now.

I don't have a very complicated system. I can't help but wonder if I'd be more stable running version 4 instead of 5.