Search found 4475 matches

by heinrichsweikamp
16 May 2026, 16:19
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: OSTC Sport Firmware announcement
Replies: 1
Views: 66

Re: OSTC Sport Firmware announcement

Hallo,

Das machen wir auch hier weiterhin so. Allerdings waren die letzten Versionen nur für die neuen OSTC+ Versionen nötig und sind funktional unverändert. Bei für alle Versionen empfohlenen Updates machen wir das in Zukunft wieder.

Gruß,
Matthias
by heinrichsweikamp
12 Apr 2026, 13:16
Forum: OSTC Mk.2, 2N and 2C (Sold between 2007 and 2014)
Topic: New 3.16 Firmware
Replies: 4
Views: 129609

Re: New 3.16 Firmware

There are no known issues with this 3.16, so update to 3.16 and I'm sure it will work fine with your 2C then.

Matthias
by heinrichsweikamp
09 Apr 2026, 12:47
Forum: OSTC Mk.2, 2N and 2C (Sold between 2007 and 2014)
Topic: New 3.16 Firmware
Replies: 4
Views: 129609

Re: New 3.16 Firmware

Hello,

This is a bit tricky, but you can restore it using the ^‘Bootloader v1’ on Windows: https://forum.heinrichsweikamp.com/viewtopic.php?t=4071

> If firmware version <1.90 is still installed:
> - Download Bootloader v1
> - Select OSTC, Mk.2/2N/2C
> - Click on ‘Update Firmware’
> - Select the ...
by heinrichsweikamp
09 Apr 2026, 10:22
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: Using Subsurface to update BLE-only OSTC
Replies: 0
Views: 1650

Using Subsurface to update BLE-only OSTC

The newer OSTC+ (2026 and later) and OSTC Nano models require a Bluetooth Low Energy (BLE)-compatible updater to update the firmware. While the OSTConf iOS app or the latest HWOS Config for Android can perform this task on your mobile device, the old OSTC Companion is unable to do so on desktop ...
by heinrichsweikamp
28 Mar 2026, 20:02
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: hwOS TECH: New Firmware 3.33
Replies: 28
Views: 34700

Re: hwOS TECH: New Firmware 3.33

fixed in the 3.34...

[3.34]
BUGFIX: Compass showed 000 when dive mode was started out of sleep mode
NEW: Support for new hardware versions (OSTC+ only)
BUGFIX: String "Höhle" was not properly shown (German version only)
BUGFIX: Digital S8 Interface could delay startup on OSTC+ S8 in rare caes
by heinrichsweikamp
27 Mar 2026, 09:16
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: comparison 2, nano or +?
Replies: 3
Views: 931

Re: comparison 2, nano or +?

The battery compartment in the OSTC+ and the USB port in the OSTC nano are watertight. This is fine for a small leak or in freshwater, but if you dive a week-long liveaboard with a leaking battery cap or missing USB cap, both units will suffer damage.
Regards,
Matthias
by heinrichsweikamp
23 Mar 2026, 20:51
Forum: OSTC 4 and OSTC 5
Topic: hwOS4: New Firmware 1.7.5 with RTE 3.70
Replies: 10
Views: 4940

Re: hwOS4: New Firmware 1.7.5 with RTE 3.70

Yes, in bailout mode the OSTC 4 usues normal OC calculations for decompression and ppO2 warnings.
by heinrichsweikamp
22 Mar 2026, 17:34
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: comparison 2, nano or +?
Replies: 3
Views: 931

Re: comparison 2, nano or +?

Hi,

I have our comparison sheet attached here. If you don't mind the slightly smaller display, the OSTC nano is very popular right now. Especially for CCR divers (as a backup with fixed setpoints).

Regards,
Matthias
by heinrichsweikamp
25 Feb 2026, 16:06
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: hwOS TECH: New Firmware 3.33
Replies: 28
Views: 34700

Re: hwOS TECH: New Firmware 3.33

Die Kompass-Anzeige tut da wieder so, egal ob der OSTC beim abtauchen an ist, oder nicht.

Gruß,
Matthias
by heinrichsweikamp
13 Feb 2026, 17:01
Forum: OSTC 4 and OSTC 5
Topic: hwOS4: New Firmware 1.7.5 with RTE 3.70
Replies: 10
Views: 4940

Re: hwOS4: New Firmware 1.7.5 with RTE 3.70

We have this in the code already: https://code.heinrichsweikamp.com/publi ... 73180fde1d

It wasn't added to the latest release because we have not tested it in detail yet (Tests with the logbook software/Apps).

regards,
Matthias
by heinrichsweikamp
03 Feb 2026, 10:14
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: hwOS TECH: New Firmware 3.33
Replies: 28
Views: 34700

Re: hwOS TECH: New Firmware 3.33

Von welcher Version bist Du denn gekommen? Stelle zudem noch den Batterietyp auf T3 (Reset menü). T0 stimmt für den OSTC cR nicht.

Gruß,
matthias
by heinrichsweikamp
02 Feb 2026, 09:35
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: hwOS TECH: New Firmware 3.33
Replies: 28
Views: 34700

Re: hwOS TECH: New Firmware 3.33

We updated this post for the 3.33 release. Many thanks to everyone who provided detailed and helpful information about this issue. This enabled us to quickly narrow down the problem.
by heinrichsweikamp
12 Jan 2026, 18:31
Forum: OSTC 4 and OSTC 5
Topic: hwOS4: New Firmware 1.7.5 with RTE 3.70
Replies: 10
Views: 4940

hwOS4: New Firmware 1.7.5 with RTE 3.70

ENGLISH below.

Hallo,

Die neue Firmware 1.7.5 wurde nun veröffentlicht.

Firmwares

Anleitung zur Installation: https://forum.heinrichsweikamp.com/viewtopic.php?f=7&t=19186 (Je nach aktueller Version kann es nötig sein, das Update zweimal zu starten. Der OSTC4 bzw. OSTC 5 gibt dazu nach dem ...
by heinrichsweikamp
10 Jan 2026, 15:49
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: hwOS TECH: New Firmware 3.33
Replies: 28
Views: 34700

Re: hwOS TECH: New Firmware 3.32

Danke für die Hinweise, wir schauen uns das an. Kannst Du uns auch die "Hardware" Information aus dem "Information" menü mal schicken?

Gruß,
Matthias
by heinrichsweikamp
08 Jan 2026, 12:35
Forum: OSTC Mk.2, 2N and 2C (Sold between 2007 and 2014)
Topic: End of Hardware Support for OSTC 2N and Mk.2
Replies: 6
Views: 4100

Re: End of Hardware Support for OSTC 2N and Mk.2

Der neue OSTC5 hat ein AMOLED bekommen.
ostc5_front_1_web.png
Gruß,
Matthias
by heinrichsweikamp
07 Jan 2026, 19:29
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: problems updating to firmware 3.32
Replies: 4
Views: 2649

Re: problems updating to firmware 3.32

I can only recommend to try the update with a different method (HWOS Config on Android) or the OSTC Companion from PC/MAC.

Regards,
Matthias
by heinrichsweikamp
07 Jan 2026, 13:03
Forum: OSTC Mk.2, 2N and 2C (Sold between 2007 and 2014)
Topic: End of Hardware Support for OSTC 2N and Mk.2
Replies: 6
Views: 4100

End of Hardware Support for OSTC 2N and Mk.2

Seit 2004 sind eine lange Lebensdauer und ein langer Support für uns eine Selbstverständlichkeit. Wir produzieren und unterstützen unsere Produkte über Jahre hinweg, nicht nur während der Marketing-Zyklen. So investieren wir beispielsweise viel in die Ersatzteilversorgung älterer Geräte. Dennoch ...
by heinrichsweikamp
07 Jan 2026, 11:38
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: problems updating to firmware 3.32
Replies: 4
Views: 2649

Re: problems updating to firmware 3.32

Hi,

Updating to the new version is done with the existing/installed version. The new version will start after successful installation. You have a TECH version running on your OSTC+? The OSTConf App was updated very recently to support the new OSTC nano, do you have the latest version of the App ...
by heinrichsweikamp
06 Jan 2026, 17:13
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: hwOS TECH: New Firmware 3.33
Replies: 28
Views: 34700

Re: hwOS TECH: New Firmware 3.32

Was für eine Spannung/Batt% wurde für diesen TG denn im Logbuch abgespeichert? Das sieht mir doch eher nach einem Hardwareproblem aus... Das sich (nur durch das Update) ein Gas verstellt, ist kaum denkbar. Dieses Verhalten hätten wir sofort bemerkt und an diesem Teil der Firmware wurde auch schon ...
by heinrichsweikamp
03 Jan 2026, 16:03
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: lime usage time
Replies: 6
Views: 3373

Re: lime usage time

Hello,

The changes have been made and are included in the 3.32: viewtopic.php?t=22672

Regards,
Matthias
by heinrichsweikamp
03 Jan 2026, 15:59
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: hwOS TECH: New Firmware 3.33
Replies: 28
Views: 34700

hwOS TECH: New Firmware 3.33

Hello,

ENGLISH:
The new hwOS tech firmware 3.33 is now available for download:
https://hwdiving.com/firmware/?lang=en

Using OSTC+ or OSTC cR with external O2-Monitoring? Make sure to install the firmware with "_cr_" in the file name to keep the O2-Monitoring option available!


[3.33]
MD5 ...
by heinrichsweikamp
03 Jan 2026, 15:53
Forum: OSTC 4 and OSTC 5
Topic: OSTC 4 freezing and Bluetooth issues
Replies: 6
Views: 5012

Re: OSTC 4 freezing and Bluetooth issues

Please email us. We're at the "boot" dive show yes, but we won't repair your OSTC 4 there.

We might need out workshop/tools, so please contact us and we take care of this: info@hwdiving.com

Regards,
Matthias