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Post subject: Love the GT-100 but...
Posted: Thu Jun 01, 2017 2:58 pm
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My amp is randomly rebooting itself anywhere from 5-15 minutes into playing, 1 to 3 times an hour. Curious to see if it has happened to anyone else. I have the latest firmware update, disabled bluetooth/phone and it still reboots. Next is to remove it from WIFI to rule that out. Otherwise enjoying the tone and the effect variety in one box. Using your phone to control the amp is certainly not a gimmick, very convenient!


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Post subject: Re: Love the GT-100 but...
Posted: Thu Jun 01, 2017 6:50 pm
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Oof. Glad to hear you're liking the amp, but the behavior you're describing there definitely has "Contact Customer Support" written all over it. Definitely file a ticket at https://support.fender.com/hc/en-us/requests/new or call the number listed on that site.

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Post subject: Re: Love the GT-100 but...
Posted: Thu Jun 01, 2017 7:17 pm
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I've had some bugs and one thing you can try thats worked for me is to do a restore that installs the base firmware Then after that you can update to the latest again. You will lose any presets you created so write those settings down or maybe upload them to the user presets cloud. To restore hold down the FX button and the preset layer (top button) button while starting the amp and hold for 5 seconds. Takes a while so be prepared to wait as much as 15-20 minutes. Then you can either update to the latest or maybe stay with the base firmware long enough to see if it still does it. If so you probably have a hardware issue.


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Post subject: Re: Love the GT-100 but...
Posted: Fri Jun 02, 2017 3:25 am
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Hope you figure it out but sounds like you have a defective amp, can you exchange it?


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Post subject: Re: Love the GT-100 but...
Posted: Sun Jun 04, 2017 4:55 pm
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@oczad, so far great tip, I restored back to the base build, several hours of playing over the weekend and no crashes. Ready to tackle the update again next and will try just wifi first.


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Post subject: Re: Love the GT-100 but...
Posted: Sun Jun 04, 2017 5:35 pm
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Thats great ! Yeah, i've been thru a lot with mine because it has had several issues and a fault that keeps coming back after updates or restores, so they're sending me a new one. But i have found that aside from that reoccurring one, that when anything goes wacky with these a restore then update has always seemed to fix things even when a forced update (rewrites with the same FW thats in it now) doesn't. glad u got it working. It should be good now when you update. From what i've been told it's not uncommon for updates to be corrupted i guess due to it being a wireless update rather than hardwire like with the old line.


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Post subject: Re: Love the GT-100 but...
Posted: Sun Jun 04, 2017 9:48 pm
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MikePentatonic, if you do try another update try using the "Force Update" procedure, by pressing the middle softkey AND encoder while turning on. This will take quite a bit longer but will ensure that the entire firmware is loaded, not just an incremental subset of firmware.

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Post subject: Re: Love the GT-100 but...
Posted: Sun Jun 04, 2017 10:44 pm
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Brad Traweek - Fender wrote:
MikePentatonic, if you do try another update try using the "Force Update" procedure, by pressing the middle softkey AND encoder while turning on. This will take quite a bit longer but will ensure that the entire firmware is loaded, not just an incremental subset of firmware.


And hold them for 5 seconds. Just thought i'd add that since that what the manual says.

So brad, are you saying that when you do a regular update it only downloads and installs the changes from the last version but leaves everything else from the former firmware and that doing a forced update downloads and overwrites the entire firmware?


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Post subject: Re: Love the GT-100 but...
Posted: Mon Jun 05, 2017 1:56 am
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Unlike firmware updates that are done via a computer, with direct WiFi updates like this, there is no way to access the checksum to check for corruption of the data in transit. Firmware updates should be possible by downloading a firmware update app and sent from the computer to the amp over USB. Fender have chosen to bypass the computer route so the firmware in the amp should have a checksum facility and be able to report an update error if it detects data corruption, and ask the user to try again.


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Post subject: Re: Love the GT-100 but...
Posted: Mon Jun 05, 2017 5:42 am
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stratocaster1983 wrote:
Unlike firmware updates that are done via a computer, with direct WiFi updates like this, there is no way to access the checksum to check for corruption of the data in transit.

Huh? That's absolutely not the case. Not only does TCP handle checksums and retransmits, and https a stronger checksum on top of that, but signed packages is the standard. For big ones, multiple signatures so it can be checked during transmission after saving each component locally, not just afterwards.
You can safely presume that the packages stored on the device after download are both bit perfect and from Fender, unless the programmers were complete amateurs.

What is the case is that you cannot easily verify the package yourself. But that holds little value anyhow, because the only thing a checksum helps with is the storage integrity, i.e. that nothing went wrong when writing the package. Unless you can run the checksum on the same medium as the install occurs from, that's not very useful.

I agree that a WiFi only upgrade is bad, though. If WiFi is broken and you cannot connect, you cannot upgrade. And once Fender's web servers go away in the future, you cannot upgrade. It seems designed for one thing only - to hide the firmware from scrutiny by others.


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Post subject: Re: Love the GT-100 but...
Posted: Mon Jun 05, 2017 5:53 am
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I have a LIne6 Spider Jam and have updated the firmware several times. Line6 publishes checksums and provide a MD5 checksum utility to verify downloads before installing. I've never had one fail but I've heard others saying that their checksum verification failed.


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Post subject: Re: Love the GT-100 but...
Posted: Mon Jun 05, 2017 6:21 am
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stratocaster1983 wrote:
I have a LIne6 Spider Jam and have updated the firmware several times. Line6 publishes checksums and provide a MD5 checksum utility to verify downloads before installing. I've never had one fail but I've heard others saying that their checksum verification failed.

Back in the days of FTP and gopher, verifying downloads was a valid concern, because FTP and gopher do not do any checksumming. The individual TCP packets are checksummed, but with a trivial checksum where errors sometimes can go undetected. So a checksum was often provided, for good reasons.

But nobody uses FTP or gopher anymore. With http/https/sftp/rsync and other modern protocols, content is always checksummed and verified.
This is why you do not see corrupt images in your web browser that you have to reload to see properly, or web pages that turn into gibberish halfway down, as was the case in the dawn of web with HTTP 0.9 and half of all URLs being ftp:// or gopher://.

Checksums still hold some value in making sure that (a) nobody has tampered with the packages, and (b) the storage medium you save to hasn't suffered from bit rot.
(a) is only useful if you can obtain the checksum or signature key through a different path than the package itself.
(b) is a concern for all storage media that don't have advanced error detection (like RAID). A solar flare can flip bits, or magnetic decay can cause data loss.

But if you download and then copy the download to the device that uses it, that is of no more value than a device that downloads directly and does not let you do a checksum. Because a storage failure on the device itself will go undetected (by you) in both cases.

I expect that the Fender firmware download not only is protected during transit using a protocol with checksums (most likely https), but also has a signed checksum. If the signature fails, it will not allow installation.


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Post subject: Re: Love the GT-100 but...
Posted: Mon Jun 05, 2017 6:29 am
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Quote:
I expect that the Fender firmware download not only is protected during transit using a protocol with checksums (most likely https), but also has a signed checksum. If the signature fails, it will not allow installation.


Indeed, that's what I would hope for so, I wonder what people are being asked to do a complete firmware re-install and why that base firmware has to be downloaded rather than installed from ROM?


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Post subject: Re: Love the GT-100 but...
Posted: Mon Jun 05, 2017 6:49 am
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stratocaster1983 wrote:
I wonder what people are being asked to do a complete firmware re-install and why that base firmware has to be downloaded rather than installed from ROM?

That seems downright stupid, and I hope that's not the case. Penny pinchers who did not want to pay for the extra storage for a known good firmware image? Planned obsolescence to ensure you cannot "repair" a broken amp in the future after the Fender web site is taken down, so you have to buy a new amp?

In any case, I expect that the GT will be hacked and workarounds found, because being at the mercy of a company that has shown willingness to drop software development even before they stop selling a device is not a good solution for everyone.


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Post subject: Re: Love the GT-100 but...
Posted: Mon Jun 05, 2017 8:43 am
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arth1 wrote:
stratocaster1983 wrote:
I wonder what people are being asked to do a complete firmware re-install and why that base firmware has to be downloaded rather than installed from ROM?

That seems downright stupid, and I hope that's not the case. Penny pinchers who did not want to pay for the extra storage for a known good firmware image? Planned obsolescence to ensure you cannot "repair" a broken amp in the future after the Fender web site is taken down, so you have to buy a new amp?

In any case, I expect that the GT will be hacked and workarounds found, because being at the mercy of a company that has shown willingness to drop software development even before they stop selling a device is not a good solution for everyone.


This is something i worried about, tho at my age i may not be around or not playing by the time the GT range is discontinued so it may not be an issue for me. But it is a bit worrisome and i think fender really needs to have provisions for owners to save a copy of the firmware they use and make it possible to install it yourself w/o the need of fender's server. Planned obsolescence is understandable as far as hardware because things do wear out after a lot of use, and many things can be repaired and people know and expect that. But it isn't right if you own one of these and take good care of it or even use it so little that it's like new after many years a point where fender takes the firmware off the cloud and now you have a doorstop if anything happens. Or at best u r stuck going to the baseware and giving up all the fixes and improvements that have come with updates. Fender needs to support owners one way or another and i think that means give us a way to keep and install firmware w/o depending on fender.


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