Search found 4484 matches

by heinrichsweikamp
22 Jun 2026, 12:57
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: Firmware update 10.97 Problem beim OSTC Sport
Replies: 8
Views: 534

Re: Firmware update 10.97 Problem beim OSTC Sport

Hallo,

Die Firmware 10.97 läuft erst, wenn sie installiert wurde. Die hat zumindest mal mit dem Updateproblem hier absolut nichts zu tun. Schicke den OSTC im Zweifelsfall zu uns, wir bekommen das schon installiert.

Gruß,
Matthias
by heinrichsweikamp
15 Jun 2026, 15:48
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: Firmware update 10.97 Problem beim OSTC Sport
Replies: 8
Views: 534

Re: Firmware update 10.97 Problem beim OSTC Sport

Bei "OSTConf" (Der iPhone App, die Du vermutlich meinst) geht nur BLE. Hier mal im OSTC reset menü ein "Reset-Bluetooth" auswählen.

Gruß,
Matthias
by heinrichsweikamp
12 Jun 2026, 19:00
Forum: OSTC Mk.2, 2N and 2C (Sold between 2007 and 2014)
Topic: OSTC Mk2 Screen staying dark
Replies: 4
Views: 335

Re: OSTC Mk2 Screen staying dark

I agree, this looks like the unit is end-of-life unfortunately.

Matthias
by heinrichsweikamp
11 Jun 2026, 11:09
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: Firmware update 10.97 Problem beim OSTC Sport
Replies: 8
Views: 534

Re: Firmware update 10.97 Problem beim OSTC Sport

Hallo,

Einfach nochmal anstoßen, das Update. Vielleicht mal mit Bluetooth Classis statt BLE oder umgekehrt.

Gruß,
Matthias
by heinrichsweikamp
11 Jun 2026, 11:08
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: OSTC 2 hwOS tech
Replies: 7
Views: 6605

Re: OSTC 2 hwOS tech

Vielleicht wäre in dem Fall ein OSTC+ die bessere Wahl, da kann man die AA Batterie einfach selber tauschen.

Gruß,
Matthias
by heinrichsweikamp
10 Jun 2026, 22:07
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: OSTC 2 hwOS tech
Replies: 7
Views: 6605

Re: OSTC 2 hwOS tech

Und warum das so implementiert wurde haben wir ja schon einen Beitrag weiter oben beschrieben. Das dient dem Schutz der Batteriezelle, welche im OSTC 2 schon seit sehr vielen Jahren aus guten Gründen fest verbaut ist.
by heinrichsweikamp
31 May 2026, 16:54
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: hwOS TECH: New Firmware 3.37
Replies: 0
Views: 471

hwOS TECH: New Firmware 3.37

Hello,

ENGLISH:
The new hwOS tech firmware 3.37 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!


[3.37]
MD5 ...
by heinrichsweikamp
24 May 2026, 16:23
Forum: OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)
Topic: hwOS Sport: New Firmware 10.97
Replies: 0
Views: 1744

hwOS Sport: New Firmware 10.97

Hello,

The new hwOS sport firmware 10.97 is now available for download:
https://hwdiving.com/firmware/?lang=en

The following changes have been applied:
[10.97]
MD5: 57dd4b6843bef9c0a6a77dbec182eb5d
NEW: Add color-coded battery voltage as an additional warning for a low battery (3,6V rechargeable ...
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: 12340

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: 139059

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: 139059

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: 11005

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: 29
Views: 93406

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: 4959

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: 26564

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: 4959

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: 29
Views: 93406

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: 26564

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: 29
Views: 93406

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: 29
Views: 93406

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: 26564

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: 29
Views: 93406

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: 11391

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