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Author Topic: The sad tale of the (very cheap) Zyxel VMG3925  (Read 5041 times)

tubaman

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The sad tale of the (very cheap) Zyxel VMG3925
« on: August 21, 2017, 02:11:15 PM »

Reading about other Kitizens exploits with Zyxel VMG3925s I thought 'I need one of those to play with'.
As I didn't want to pay a lot I started searching my favourite auction site but the lowest price I could find was £75 - far too much for tight-fisted me!
Not wishing to give up I continued my search, and after some time (probably weeks  :-[) I found a brand new Post Office branded version for £10.99 plus postage - grand total of £14.90. ;D
It was on Buy-it-Now or best offer, but I didn't feel cheeky enough to make an offer at that price (and certainly didn't want anyone else snapping it up in the meantime), so it was duly purchased.
A few days later it arrived and it was indeed a brand-new, shrink wrapped, VMG3925-B10B with Post Office branding as described.:thumbs:
Like a little child I excitedly connected it up and configured it for my BT circuit - all initially seemed well.
After about half-an-hour I noticed that the 5GHz SSID had disappeared. :hmm:
Further checks showed that it was coming and going (mostly going) despite showing as being 'on' in the GUI. :(
'What bad luck' (or other unpublishable words to that effect) I thought.
I next upgraded the firmware to the latest version, but it was still no good. :no:
Then I thought that, being new, perhaps Zyxel would help me. :fingers:
A support ticket was raised and, all credit to Zyxel, they responded very quickly, but alas it was not to be - apparantly the Post Office branded versions were supplied through Fujitsu and Zyxel could not cover it. :(
So with heavy heart it has gone back to the seller and I await my refund. :bye:

Why do I have such bad luck. :sob:
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BT FTTC 55/10 Huawei Cab - Zyxel VMG8924-B10A

banger

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Re: The sad tale of the (very cheap) Zyxel VMG3925
« Reply #1 on: August 21, 2017, 03:05:57 PM »

Your tale is duly noted as I have just bought a 1½-month-old VMG3925-B10B and await its delivery. I don't think it is Post Office branded but will have to ask.
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Tim
talktalkbusiness.net & freenetname
Asus RT-AC68U and ZyXEL VMG1312-B10A Bridge on 80 Meg TTB Fibre

https://www.thinkbroadband.com/speedtest/1502566996147131655

tubaman

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Re: The sad tale of the (very cheap) Zyxel VMG3925
« Reply #2 on: August 21, 2017, 03:12:32 PM »

Your tale is duly noted as I have just bought a 1½-month-old VMG3925-B10B and await its delivery. I don't think it is Post Office branded but will have to ask.

The Post Office branded ones are easy to spot if you have a photo of it as they have a big red logo on the front and also don't come in a Zyxel branded box.
I was just unlucky to get one that was DOA - it happens, but why me? :(
« Last Edit: August 21, 2017, 03:14:46 PM by tubaman »
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BT FTTC 55/10 Huawei Cab - Zyxel VMG8924-B10A

banger

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Re: The sad tale of the (very cheap) Zyxel VMG3925
« Reply #3 on: August 21, 2017, 03:43:12 PM »

It is this one http://www.ebay.co.uk/itm/253102283151

Looks like a retail one as far as I can tell but it's from Hull so could be Kcom. No reply yet.
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Tim
talktalkbusiness.net & freenetname
Asus RT-AC68U and ZyXEL VMG1312-B10A Bridge on 80 Meg TTB Fibre

https://www.thinkbroadband.com/speedtest/1502566996147131655

tubaman

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Re: The sad tale of the (very cheap) Zyxel VMG3925
« Reply #4 on: August 21, 2017, 03:48:57 PM »

I can't get to ebay right now, but a Post Office one will look like this.
 :)
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BT FTTC 55/10 Huawei Cab - Zyxel VMG8924-B10A

banger

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Re: The sad tale of the (very cheap) Zyxel VMG3925
« Reply #5 on: August 21, 2017, 03:51:21 PM »

Cheers for that. Seller has replied it was a Kcom unit but no username/password and has been factory reset. Trying to see if the firmware has been upgraded.
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Tim
talktalkbusiness.net & freenetname
Asus RT-AC68U and ZyXEL VMG1312-B10A Bridge on 80 Meg TTB Fibre

https://www.thinkbroadband.com/speedtest/1502566996147131655

broadstairs

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Re: The sad tale of the (very cheap) Zyxel VMG3925
« Reply #6 on: August 21, 2017, 06:14:57 PM »

My second unit was an ex-KCom and I had no problems with it. I did a full reset via the pin on the back and power cycled it and it all came up OK with admin 1234 etc. Once the supervisor p/w was obtained I got it all setup OK.

Stuart
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ISP:Vodafone Router:Vodafone Wi-Fi hub FTTP

banger

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Re: The sad tale of the (very cheap) Zyxel VMG3925
« Reply #7 on: August 21, 2017, 06:36:39 PM »

Thanks Stuart I have been looking at your MWDS and it looks very stable with the 3925.
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Tim
talktalkbusiness.net & freenetname
Asus RT-AC68U and ZyXEL VMG1312-B10A Bridge on 80 Meg TTB Fibre

https://www.thinkbroadband.com/speedtest/1502566996147131655

GigabitEthernet

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Re: The sad tale of the (very cheap) Zyxel VMG3925
« Reply #8 on: August 21, 2017, 06:58:32 PM »

Chipset same as 8324?
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banger

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Re: The sad tale of the (very cheap) Zyxel VMG3925
« Reply #9 on: August 21, 2017, 07:13:59 PM »

Zyxel   VMG3925 – B10B    Broadcom            BCM63168V    A2pv6F039f1
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Tim
talktalkbusiness.net & freenetname
Asus RT-AC68U and ZyXEL VMG1312-B10A Bridge on 80 Meg TTB Fibre

https://www.thinkbroadband.com/speedtest/1502566996147131655

Chrysalis

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Re: The sad tale of the (very cheap) Zyxel VMG3925
« Reply #10 on: August 21, 2017, 07:29:24 PM »

my 3925 came with what sounds like a loose screw inside the unit, but seems functionally fine, although bear in mind I have not tested the wifi, but did test all the ethernet ports.

Only been actually used in bridge mode tho but doing its job so far.
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banger

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Re: The sad tale of the (very cheap) Zyxel VMG3925
« Reply #11 on: August 21, 2017, 09:55:21 PM »

I plan to use in bridge mode, is it similar to 1312 to set up? I think I read in another thread there is no power management menu, is this correct?
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Tim
talktalkbusiness.net & freenetname
Asus RT-AC68U and ZyXEL VMG1312-B10A Bridge on 80 Meg TTB Fibre

https://www.thinkbroadband.com/speedtest/1502566996147131655

broadstairs

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Re: The sad tale of the (very cheap) Zyxel VMG3925
« Reply #12 on: August 21, 2017, 10:28:06 PM »

I plan to use in bridge mode, is it similar to 1312 to set up? I think I read in another thread there is no power management menu, is this correct?

Correct...

Stuart
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ISP:Vodafone Router:Vodafone Wi-Fi hub FTTP

Chrysalis

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Re: The sad tale of the (very cheap) Zyxel VMG3925
« Reply #13 on: August 22, 2017, 02:40:07 AM »

its pretty much the same process as any other modern zyxel to setup bridge mode.

So disable DHCP server on both subnets.
Disable wifi
Isolate a port on the interface grouping to be used for the bridge.
Configure VDSL WAN setting for bridged mode.
Check and configure the bridge ip in home network settings.
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