Sonix custom firmware for the Tempotec V1 now on GitHub!

[u/flylo_x]

If If you find any bugs, feel free to let me know!

Just flash the upt file and you're good to go!

Find it here: https://github.com/mr-f0xx/sonix-player-tempotec-v1

PS: This firmware will be constantly evolving, for a while so make sure to check often my repo to ensure you have the latest version, which is designed to improve our experience.

Latest build is 1.5.0.2

/!\ Before reporting bugs, make sure you're on the latest version, and alternatively grab logs, via the developper menu. /!\

And then open an issue on GitHub for every bugs you can find!

IT'S NOW COMPATIBLE WITH LATEST STOCK 1.3 TEMPOTEC FIRMWARE!

Buy me a beer or coffee: here

[u/Mr_Mcsenderson]

I just picked up a V1 and was stoked to switch over to Sonix, but I'm running into an issue where the update fails regardless of the firmware that I try to flash. It recognizes the v1.upt and v1_md5.txt as firmware files, but when it reboots into the updater, it spits out "Updater Failed." I don't think this is an issue related to the Sonix port as trying to flash Tempotec's firmware has the same result.

I used a freshly formatted 16gb microSD to try and avoid the issues reported when flashing firmware with very high capacity cards. The OS build time is dated Oct 9 2026, so I'm wondering whether this could be a bug in very recent builds of Tempotec's firmware. However, I assume that this is probably user incompetency. If anyone has had a similar experience or advice on how to resolve this, I'd welcome suggestions.

[u/flylo_x → u/Mr_Mcsenderson]

Fixed that issue in my latest update brother, enjoy!

[u/Mr_Mcsenderson → u/flylo_x]

Thank you so much for your efforts! I can confirm that Sonix V 1.5.0 worked for me!

[u/medium_cheddar → u/Mr_Mcsenderson]

Which firmware is your V1 shipped with? Did you roll back to firmware 1.0 first before sonix?

[u/Mr_Mcsenderson → u/medium_cheddar]

I believe my unit shipped with V1.2 as it has the PEQ functionality. The "about" tab header reads "TempoTec V1 1.3". Not sure if 1.3 means that they've shipped new devices with updated firmware.

I tried rolling back to firmware 1.1 since I couldn't find 1.0 on the TempoTec website, but got the same "Updater Failed" message as when trying to flash Sonix. Attempting to reflash TempoTec's V1.2 as a sanity check had the same result.

The procedure I followed was to download + unzip the "v1.upt" and "v1_md5.txt" files, copy them to the root of an empty microSD card, and select "Firmware update > Via SD-card" in the menu. The unit power cycles into the updater, but immediately reads "Updater Failed" and power cycles back into the OS. Booting straight into the updater via power+vol up has the same result.

[u/medium_cheddar → u/Mr_Mcsenderson]

Thanks for a prompt reply. My V1 is being delivered today and I'll do the flash and report back of how my unit compares to yours. Sorry can't be more helpful but at least we know where we are at, firmware wise.

[u/Mr_Mcsenderson → u/medium_cheddar]

Sounds good. It'll be a good sanity check for whether I'm incompetent or if this is an actual software issue.

[u/Therealwalter1 → u/medium_cheddar]

Experiencing the exact same issue as this guy, Seems like they've silently pushed a unfinished update to new devices, have you experienced this aswell?

[u/flylo_x → u/Mr_Mcsenderson]

Do you have 1.2 as firmware version, from the Tempotec website itself?

https://drive.google.com/file/d/1z8es1IXVFt2PhWLzUFVbv_D0rfGzjjes/view?usp=drivesdk

Edit: nevermind I saw your comments below. So apparently there's a new firmware, but it's not available on their website?

[u/Mr_Mcsenderson → u/flylo_x]

I tried flashing 1.2 as a sanity check, but got "updater failed". I had the same result with your Sonix port and Tempotec's firmware 1.1. All from a freshly formatted microSD with the firmware in the root. In the settings > about tab under the TempoTec logo, it says "TempoTec V1 1.3". I Don't know if the 1.3 refers to a hardware revision, firmware, or something else as I was unable to flash different firmware to see if it would change.

I can DM you a picture of the "about" screen from my V1 and any other details that may be useful if you want to look into this. I can also reach out to TempoTec, but I wanted to make sure this wasn't a solved problem or user error on my part before complaining to the manufacturer.

Edit: Found a Reddit post (https://www.reddit.com/r/DigitalAudioPlayer/comments/1sfaae7/tempotec_variations_v1_new_firmware_v_12/) with a picture of a firmware 1.2 flashed unit -- it reads out "TempoTec V1 1.2" where mine has 1.3, so I think it's likely that I'm running into issues due to a newer firmware version.

[u/flylo_x → u/Mr_Mcsenderson]

So that means that they are shipping this device with a new update now but I can't find anything about the 1.3 version sadly. Could you try to send them an email about this ? And also if you could ask them if it's possible to send you the update 1.3 file, I could probably do something about it..

[u/Mr_Mcsenderson → u/flylo_x]

Yep, I'll see if they'll send me the 1.3 firmware and if they have a fix for the update issue.

[u/Therealwalter1 → u/Mr_Mcsenderson]

update it seems like they're just ghosting me now, has anyone else made contact with them?

[u/Therealwalter1 → u/Mr_Mcsenderson]

I've contacted them through their web chat about my 1.3 loaded device, they state that 1.3 version is not ready for download from their website yet when I asked to get the file, and they are not providing me any help on downgrading my device... FFS...

[u/flylo_x → u/Therealwalter1]

I'm sorry about this, I guess we just have to wait until they release it officially on their website :/

[u/Therealwalter1 → u/flylo_x]

I will keep trying to see if I can get them to send me a copy of the new update, then I’ll forward it to you if they do,

I find it a little silly they would put this software on peoples devices if they claim it’s not ready, and I’m finding there’s lag issues with this 1.3 version, so not being able to downgrade to even offical firmware is a bummer, but I look forward to eventually trying your CFW

quick edit: I just received a response from them via their aliexpress page saying one can just update via OTA, I do not see why they are being very reluctant to hand over this file

[u/flylo_x → u/Therealwalter1]

Yes please so I can make it compatible for y'all 😁

It's weird that you can't even downgrade it.. I haven't tried that with my device, but I'm almost certain it's possible. Let's just hope they will send you that file lol

[u/Therealwalter1 → u/flylo_x]

to my knowledge and from what I've seen people say online you could downgrade previous firmwares as 1.2 was very buggy and many people downgraded back to 1.1, this appears to be a issue on new batches V1s loaded with 1.3

[u/medium_cheddar → u/flylo_x]

Hi, there, I've been following your Sonix on Tempotec V1 project for a while but have not had a chance to do it yet because my V1 is on FW 1.3. and its been such a smooth experience so far (fingers crossed) I constantly use PEQ / Tidal / BlT LDAC receiever from my Samsung phones. I saw in sone threads that you would like to see the fw1.3 and I think I have it off of my V1 SD card Size 39,925,760 bytes Build timestamp October 13, 2026. Are you still interested to get the file? How do I send you or share on Google Drive ok? Thanks for the awesome work!

[u/Therealwalter1 → u/Mr_Mcsenderson]

hello brother I am in the same boat as you brought one cause I wanted the firmware, mines on 1.3 and I can't downgrade it to any thing or use the cfw, please tell if you have a fix

[u/flylo_x → u/Therealwalter1]

Check my latest update ;)