# Reconnecting hub **URL:** \ **Category:** Devices & Integrations\ **Created:** [July 6, 2024, 6:26pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052 "2024-07-06T18:26:55Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![jastra](https://avatars.discourse-cdn.com/v4/letter/j/f19dbf/32.png) [@jastra](https://community.smartthings.com/u/jastra)\ **Post date:** [July 6, 2024, 6:26pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052/1 "2024-07-06T18:26:55Z")
My Sth-eth-200 requires it’s welcome code to add it to SmartThings can you send me my code? ---
**Author:** ![jkp](https://yyz2.discourse-cdn.com/smartthings/user_avatar/community.smartthings.com/jkp/32/117130_2.png) [@jkp](https://community.smartthings.com/u/jkp)\ **Post date:** [July 6, 2024, 6:28pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052/2 "2024-07-06T18:28:48Z")
Since it is the weekend, you should contact ST support. They will need the serial number on the bottom of your hub. Do not post it on the forum. Tap on Menu in the app and select Contact us. Also check the battery compartment to see if the code was printed on the inside of the battery cover. During the week, @nayelyz can assist on the forum. ---
**Author:** ![Barkis](https://yyz2.discourse-cdn.com/smartthings/user_avatar/community.smartthings.com/barkis/32/58864_2.png) [@Barkis](https://community.smartthings.com/u/Barkis)\ **Post date:** [July 6, 2024, 10:26pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052/3 "2024-07-06T22:26:31Z")
> [@jastra](#): > > can you send me my code? To dovetail upon what @jkp correctly said, be aware this is a user/community forum–_not_ an official SmartThings Support channel… ---
**Author:** ![nayelyz](https://avatars.discourse-cdn.com/v4/letter/n/59ef9b/32.png) [@nayelyz](https://community.smartthings.com/u/nayelyz)\ **Post date:** [July 8, 2024, 4:11pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052/4 "2024-07-08T16:11:04Z")
Hi, @jastra Please, let us know if the support team was able to help, if not, please send me a DM with the serial number, it would be great if you type the number because sometimes it’s not easy to see it in pictures 😃 ---
**Author:** ![jastra](https://avatars.discourse-cdn.com/v4/letter/j/f19dbf/32.png) [@jastra](https://community.smartthings.com/u/jastra)\ **Post date:** [July 8, 2024, 8:54pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052/5 "2024-07-08T20:54:56Z")
You are the first person to respond, thnk you1 s/n=xxx or the last character could be an 8 ---
**Author:** ![nayelyz](https://avatars.discourse-cdn.com/v4/letter/n/59ef9b/32.png) [@nayelyz](https://community.smartthings.com/u/nayelyz)\ **Post date:** [July 8, 2024, 9:01pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052/6 "2024-07-08T21:01:01Z")
Hi! I sent you a direct message with the claim code, please check your notifications. Thanks! ---
**Author:** ![d4martin](https://avatars.discourse-cdn.com/v4/letter/d/bc8723/32.png) [@d4martin](https://community.smartthings.com/u/d4martin)\ **Post date:** [November 10, 2024, 11:36pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052/7 "2024-11-10T23:36:29Z")
Hi, I’m trying to set up my sth-eth-200 hub again, after a long time disconnected and after moving to a new home. When asked to enter my welcome code, I receive an error to say can’t contact to hub. Lights on front are solid green. Can you please help? Many thanks Martin ---
**Author:** ![jkp](https://yyz2.discourse-cdn.com/smartthings/user_avatar/community.smartthings.com/jkp/32/117130_2.png) [@jkp](https://community.smartthings.com/u/jkp)\ **Post date:** [November 11, 2024, 12:05am UTC](https://community.smartthings.com/t/reconnecting-hub/284052/8 "2024-11-11T00:05:42Z")
> [@d4martin](#): > > after a long time disconnected just curious … how long has it been disconnected? and does the hub appear in the [Advanced Web App](https://my.smartthings.com/advanced)? ---
**Author:** ![orangebucket](https://yyz2.discourse-cdn.com/smartthings/user_avatar/community.smartthings.com/orangebucket/32/81590_2.png) [@orangebucket](https://community.smartthings.com/u/orangebucket)\ **Post date:** [November 11, 2024, 12:17am UTC](https://community.smartthings.com/t/reconnecting-hub/284052/9 "2024-11-11T00:17:10Z")
> [@d4martin](#): > > long time disconnected What does ‘disconnected’ mean in this context? Only if you just unplugged it I would expect it to still be registered to the account you were using when you disconnected it and the Welcome Code shouldn’t be needed unless you want to use it with a different account and probably would give an error. In that case it is easiest to log in with the old account and remove the hub, then start over with the Welcome Code to claim it with the new account. ---
**Author:** ![d4martin](https://avatars.discourse-cdn.com/v4/letter/d/bc8723/32.png) [@d4martin](https://community.smartthings.com/u/d4martin)\ **Post date:** [November 11, 2024, 9:48am UTC](https://community.smartthings.com/t/reconnecting-hub/284052/10 "2024-11-11T09:48:18Z")
I had this originally connect to the older Smartthings app. This doesn’t seem to be working anymore. By disconnected -I mean that I had completely removed the whole system and stopped using it, and stored it away. Now trying to use it again but older smartthings app doesn’t seem to work any more. So downloaded the new app. I have noticed something about having to request for your account to be ported across to the new app? Not sure I ever requested this? Could this be the issue? Is it that my original welcome code isn’t registered against the new system? ---
**Author:** ![orangebucket](https://yyz2.discourse-cdn.com/smartthings/user_avatar/community.smartthings.com/orangebucket/32/81590_2.png) [@orangebucket](https://community.smartthings.com/u/orangebucket)\ **Post date:** [November 11, 2024, 10:47am UTC](https://community.smartthings.com/t/reconnecting-hub/284052/11 "2024-11-11T10:47:50Z")
SmartThings certainly did migrate from using their own authentication to using Samsung accounts. I don’t know what would have happened if you had an old SmartThings account and never migrated it yourself. As I understand it an issue with V2 hubs is that many years ago (let’s say 2018-ish) a firmware upgrade coincided with a change of backend, with the result that the oldest hubs can no longer be upgraded. This means a ‘new’ V2 hub is quite likely to be a brick. I think the fact that you get a green light on your hub is good. That suggests it has connected to the backend. The Welcome Code is really just a claim code for a hub. When you ‘add’ a V2 hub to SmartThings you are just claiming it for your account on the backend. ~~With the V3 they replaced the claim code with a scan of a QR code on the hub.~~ _Update: I wanted to revisit that last statement. When I first installed a V3 I hadn’t actually connected it to the ethernet properly but I was still able to install it with just a scan of the QR code. Today the flow wouldn’t allow me to do anything until the hub was detected as being in pairing mode (red and green LEDs) and then I had to enter the serial number manually. So although it appears the serial number is the key, the process may have been modified._ This sort of thing is normally a support issue but @nayelyz will probably be able to see what is going on at the ST end given enough info. ---
**Author:** ![d4martin](https://avatars.discourse-cdn.com/v4/letter/d/bc8723/32.png) [@d4martin](https://community.smartthings.com/u/d4martin)\ **Post date:** [November 11, 2024, 10:56pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052/12 "2024-11-11T22:56:56Z")
Not showing on advanced web app. May have been off line for a few years. ---
**Author:** ![jkp](https://yyz2.discourse-cdn.com/smartthings/user_avatar/community.smartthings.com/jkp/32/117130_2.png) [@jkp](https://community.smartthings.com/u/jkp)\ **Post date:** [November 11, 2024, 11:16pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052/13 "2024-11-11T23:16:42Z")
As noted above, if the hub has been disconnected since mid 2018… there was a firmware pushed out that changed the address of the servers the hub connects to. Without that firmware, the hub is no longer able to connect and is basically a brick. The old servers are no longer available at this point. There is no way to update the firmware of these hubs. You should still contact ST Support to confirm or if the hub was active up to and after the noted time frame. ---
**Author:** ![nayelyz](https://avatars.discourse-cdn.com/v4/letter/n/59ef9b/32.png) [@nayelyz](https://community.smartthings.com/u/nayelyz)\ **Post date:** [November 14, 2024, 9:55pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052/14 "2024-11-14T21:55:46Z")
Hi, @d4martin We received your email to [build@smartthings.com](mailto:build@smartthings.com) and I replied. Could you check it, please? We need your Hub’s serial number to investigate it further. ---
**Author:** ![jastra](https://avatars.discourse-cdn.com/v4/letter/j/f19dbf/32.png) [@jastra](https://community.smartthings.com/u/jastra)\ **Post date:** [November 14, 2024, 10:10pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052/15 "2024-11-14T22:10:24Z")
I was given a code and I got the machine working again. Do you still need the s/n? ---
**Author:** ![nayelyz](https://avatars.discourse-cdn.com/v4/letter/n/59ef9b/32.png) [@nayelyz](https://community.smartthings.com/u/nayelyz)\ **Post date:** [November 14, 2024, 10:23pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052/16 "2024-11-14T22:23:17Z")
Hi, @jastra Sorry for the confusion. You were the one that created this post but another user is having a similar issue. He has to share the serial number. ---
**Author:** ![d4martin](https://avatars.discourse-cdn.com/v4/letter/d/bc8723/32.png) [@d4martin](https://community.smartthings.com/u/d4martin)\ **Post date:** [November 19, 2024, 5:10pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052/17 "2024-11-19T17:10:07Z")
Hi Nayelyz, Hopefully you have seen the email with my serial number ( 4000139608 ). I was wondering if there had been any progress yet or if you could advise on how long the process may take? Many thanks Martin ![IMG_3958](https://global.discourse-cdn.com/smartthings/original/3X/8/1/8166affc2a6bac0006a2a2fb24e39ade9743bba0.jpeg) ---
**Author:** ![nayelyz](https://avatars.discourse-cdn.com/v4/letter/n/59ef9b/32.png) [@nayelyz](https://community.smartthings.com/u/nayelyz)\ **Post date:** [November 19, 2024, 7:43pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052/18 "2024-11-19T19:43:52Z")
> [@d4martin](#): > > I was wondering if there had been any progress yet or if you could advise on how long the process may take? Sorry, I was OOO yesterday. I just shared the number with the team for them to check. I don’t know exactly how long that analysis will take. Once I get an update, I’ll let you know. ---
**Author:** ![TurtlePaints](https://avatars.discourse-cdn.com/v4/letter/t/dc4da7/32.png) [@TurtlePaints](https://community.smartthings.com/u/TurtlePaints)\ **Post date:** [June 16, 2026, 10:27am UTC](https://community.smartthings.com/t/reconnecting-hub/284052/19 "2026-06-16T10:27:19Z")
I just bought a version 2 hub (2015) 2nd hand and dont have a welcome code. I did have the previous owner remove it from his app. My serial # is 3000181079 @nayelyz ---
**Author:** ![Itati](https://avatars.discourse-cdn.com/v4/letter/i/df705f/32.png) [@Itati](https://community.smartthings.com/u/Itati)\ **Post date:** [June 16, 2026, 3:37pm UTC](https://community.smartthings.com/t/reconnecting-hub/284052/20 "2026-06-16T15:37:40Z")
Hi @TurtlePaints I sent you the welcome code through a DM [Next page](https://community.smartthings.com/t/reconnecting-hub/284052.md?page=2)