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After posting the same advice over and over and over throughout the last years (and for several times just during the last hours), I decided to post this here, so I can just link to it (it's also missing in any official Line 6 documentation, at least in a direct, straight ahead form). So, your update to whatever firmware failed? The following steps helped TONS of people over the last years, so give them a try. Note: I am assuming that you've backed up your HX family device already. In case you haven't, now is the time. But as your update possibly failed already, you won't be able to do so, then just proceed (and let's hope you've backed up before). 1) Shut down HX Edit (using it was likely the reason for the update not to work in the first place, so don't use it this time). Windows users *need* (<-!!!) to make sure no traces of it are running in the background anymore. You can either kill the process by using the task manager, in case you don't know how to do that, just reboot your computer. Again: It is ABSOLUTELY mandatory for the following steps to work that there's NO HX Edit or traces of it running. 2) Go to this site: https://line6.com/software/ Download the Line 6 Updater this way: That will take you to the site with the actual download (I'm not posting that link because there's various operating systems supported). 3) Install the Line 6 Updater. Edit: Mac users, in case you're running into troubles installing things, please read the bottom of this post. 4) Go to this page again: https://line6.com/software/ This time, download the actual firmware this way: Make ABSOLUTELY sure you select your hardware properly! Again, clicking "Go" will take you to the actual download page. Note: The file you will be downloading comes with a "hxf" file ending, make sure to remember the location you've downloaded that file to, you will need to know soon enough! 5) Connect your HX familiy device. Edit: 6) This*might* not be necessary, also, in case your unit really seems bricked, it might not work, but just to make sure, enter safe-boot (aka update mode). Here's how (copied from elsewhere on this site): - Helix Floor/LT: enter update mode manually by holding footswitches 6 + 12 - Helix Rack: ENC1 & ENC6 - will enter Update Mode (This feature is only available on firmware v1.06.5 and higher) - HX Effects: Holding the right arrow ">" Will put the unit in a fail safe update mode. Use this when the HX Effects is in a un-recoverable state - HX Stomp and Stomp XL: Page >: update mode. This update mode is helpful if the update is interrupted, and the HX Stomp will not boot properly. (this will apparently cause a blank screen) 7) Start the Line 6 Updater you've just installed (well, maybe you've installed it already in the past, just start it...). 8) DON'T sign in, chose "Offline Mode" (<-!!!). 9) On the following page, your device(s) should appear. If that's not happening, check whether they're properly connected to a dedicated USB port and not to some fancy HUB. Also check that the USB cable you're using is of decent quality. In case you've checked all that but your device still doesn't show up, quit reading this thread and look for another computer to try with, the following procedure obviously only works as long as your devices are detected by your computer (yeah, I know this sounds like "computing 101 nanny" stuff, but be it so...). 10) Select your device, just click on it. 11) In the following dialog, click here: In the following open dialog, navigate to the file you've downloaded in step (4). Make ABSOLUTELY sure it's indeed the file you've downloaded and not some earlier version or something for another device. 12) Click "Update". This might take a while, as can be read here: Wohoo! Once done, make sure you've got the latest version of HX Edit installed. In case you haven't, grab it from here again: https://line6.com/software/ Following page will take you to the actual download. Download and install. 13) Perform a factory reset before booting into HX Edit. Might not be required all the time but Line 6 recommends doing so. In case you didn't manage to do a backup before the trouble started, you might however want to do that now and then perform a factory reset. Here's the procedures for the various HX family products: Helix Floor/LT: While holding footswitches 9 & 10 (bottom row, 2 middle switches), turn on Helix Floor/LT Helix Rack: While holding knobs 5 & 6 (2 furthest right knobs below the screen), turn on Helix Rack HX Effects: While holding footswitches 6 & TAP (2 farthest right switches on the bottom row), turn on HX Effects HX Stomp: While holding footswitches 2 & 3, turn on HX Stomp HX Stomp XL: While holding footswitches C & D, turn on HX Stomp That should be it. Yeah, as said, computer nanny kinda stuff, but then, this really isn't explained too well officially (the official procedure is online updating via HX Edit, which seems to fail often enough to justify writing my little installment). Good luck! Edit: Quite obviously, in case everything worked, you might want to reload your backup onto your device, using HX Edit. Edit #2 To all Mac users running a macOS version from Catalina and onwards: Apple has added several security measures, starting with Catalina. In case an application (in this case most likely the Line 6 Updater, which I think hasn't seen an update to itself for a while, whereas HX Edit should usually just install fine) comes up with whatever error message when doubleclicking the installer, as a first step, try to do a rightclick and select "open". You will likely see a warning but it'll often allow you to click onto something saying "yes, open anyway". In case that doesn't work, it might take you to the security settings straight away. But apparently, sometimes it doesn't. As I'm still running Mojave at the time of writing this, I can't tell you the exact procedure, so here's some information: https://support.apple.com/en-us/HT202491 Thanks to @datacommandofor pointing me to those.

here's a rundown of the amps in model packs: http://l6c-acdn2.line6.net/data/6/0a0643391683555d3aa9aab48b/application/pdf/Model%20Packs%20Handbook%20(%20Rev%20D%20).pdf and here's ALL the models: http://l6c-acdn2.line6.net/data/6/0a060b316ac34f0593be902d6/application/pdf/POD%20X3%20Model%20Gallery%20(%20Rev%20B%20).pdf the standard amps are buried in this manual: http://l6c-acdn2.line6.net/data/6/0a060b316ac34f0593d912556/application/pdf/PODxt%20User%20Manual%20-%20Pre%20Version%202.pdf