OSTC 4 and OSTC 5

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hwOS4: New Firmware 1.7.6 beta with new Compass

Last post by heinrichsweikamp « 10 Jul 2026, 15:59

by heinrichsweikamp » 10 Jul 2026, 15:59

0 Replies

73717 Views

Last post by heinrichsweikamp
10 Jul 2026, 15:59
hwOS4: New Firmware 1.7.5 with RTE 3.70

Last post by TDFlo « 24 Mar 2026, 10:11
Replies: 10
by heinrichsweikamp » 12 Jan 2026, 18:31

10 Replies

101669 Views

Last post by TDFlo
24 Mar 2026, 10:11
New registered user? Please read.

Last post by heinrichsweikamp « 14 Feb 2024, 10:30
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by heinrichsweikamp » 14 Feb 2024, 10:30 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

230048 Views

Last post by heinrichsweikamp
14 Feb 2024, 10:30
FAQ: Charging the OSTC 4

Last post by heinrichsweikamp « 16 Mar 2021, 12:04

by heinrichsweikamp » 16 Mar 2021, 12:04

0 Replies

75840 Views

Last post by heinrichsweikamp
16 Mar 2021, 12:04
New OSTC Companion 3.2.1

Last post by kuehnero « 23 Mar 2020, 12:49
Replies: 1
by heinrichsweikamp » 08 Jan 2020, 14:49

1 Replies

72732 Views

Last post by kuehnero
23 Mar 2020, 12:49
Updating OSTC 4 and OSTC 5 - HowTo

Last post by heinrichsweikamp3 « 18 Apr 2023, 11:58
Replies: 2
by heinrichsweikamp » 23 Jul 2018, 10:06

2 Replies

78810 Views

Last post by heinrichsweikamp3
18 Apr 2023, 11:58
OSTC Tools for Windows - HWOS Config for Android

Last post by Rob « 10 Apr 2026, 13:20
Replies: 49
by Rob » 03 Aug 2016, 18:36
1

2
49 Replies

1680962 Views

Last post by Rob
10 Apr 2026, 13:20

Topics

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Incomplete or erroneous data in divelogs from OSTC4

Last post by diveinstructor « 08 Feb 2018, 12:57
Replies: 4
by diveinstructor » 07 Feb 2018, 20:37

4 Replies

5652 Views

Last post by diveinstructor
08 Feb 2018, 12:57
Verbindungsprobleme zum OSTC4

Last post by swissdiving « 11 Jan 2018, 07:53
Replies: 3
by tsob » 08 Jan 2018, 23:47

3 Replies

5994 Views

Last post by swissdiving
11 Jan 2018, 07:53
OSTC4 Personalisieren des TCs

Last post by heinrichsweikamp « 09 Jan 2018, 19:00
Replies: 4
by tsob » 09 Jan 2018, 00:08

4 Replies

6821 Views

Last post by heinrichsweikamp
09 Jan 2018, 19:00
OSTC 4 and Bonex Reference RS

Last post by heinrichsweikamp « 05 Jan 2018, 16:50
Replies: 2
by petkozaric » 05 Jan 2018, 12:48

2 Replies

5944 Views

Last post by heinrichsweikamp
05 Jan 2018, 16:50
Stopwatch Reset OSTC 4

Last post by Richi « 11 Dec 2017, 16:42

by Richi » 11 Dec 2017, 16:42

0 Replies

11959 Views

Last post by Richi
11 Dec 2017, 16:42
RFID transponder?

Last post by Cyborg « 04 Dec 2017, 00:11
Replies: 5
by Cyborg » 01 Dec 2017, 20:25

5 Replies

8153 Views

Last post by Cyborg
04 Dec 2017, 00:11
compass is not giving accurate reading

Last post by sadsani@gmail.com « 07 Nov 2017, 23:31

by sadsani@gmail.com » 07 Nov 2017, 23:31

0 Replies

12374 Views

Last post by sadsani@gmail.com
07 Nov 2017, 23:31
feature request: better display of ascent and descent speeds

Last post by gorcio « 16 Oct 2017, 18:08
Replies: 3
by calestyo » 18 Sep 2017, 02:15

3 Replies

10733 Views

Last post by gorcio
16 Oct 2017, 18:08
New features

Last post by Cyborg « 16 Oct 2017, 00:23

by Cyborg » 16 Oct 2017, 00:23

0 Replies

11998 Views

Last post by Cyborg
16 Oct 2017, 00:23
Feature request: custom color scheme and dynamic colors

Last post by chrisrms « 21 Sep 2017, 10:39

by chrisrms » 21 Sep 2017, 10:39

0 Replies

11806 Views

Last post by chrisrms
21 Sep 2017, 10:39
TTS time with several gases but no gas change

Last post by chrisrms « 20 Sep 2017, 11:50
Replies: 2
by chrisrms » 19 Sep 2017, 16:01

2 Replies

5126 Views

Last post by chrisrms
20 Sep 2017, 11:50
Transferring logbook from OSTC sport to OSTC 4?

Last post by heinrichsweikamp « 06 Sep 2017, 10:40
Replies: 1
by galileo1564 » 06 Sep 2017, 10:24

1 Replies

4140 Views

Last post by heinrichsweikamp
06 Sep 2017, 10:40
Bluetooth goes automatically inactive after quit simulator, bug?

Last post by chrisrms « 08 Aug 2017, 06:29
Replies: 7
by chrisrms » 07 Aug 2017, 09:02

7 Replies

7764 Views

Last post by chrisrms
08 Aug 2017, 06:29
During dive "Menu?" activates automatically, seems not normal

Last post by chrisrms « 07 Aug 2017, 10:50
Replies: 4
by chrisrms » 03 Aug 2017, 10:27

4 Replies

6306 Views

Last post by chrisrms
07 Aug 2017, 10:50
mbar seem not accurate

Last post by chrisrms « 07 Aug 2017, 08:19
Replies: 2
by chrisrms » 04 Aug 2017, 08:22

2 Replies

12679 Views

Last post by chrisrms
07 Aug 2017, 08:19
Defining new oc gas, suddenly date and time set to zero

Last post by chrisrms « 03 Aug 2017, 10:33

by chrisrms » 03 Aug 2017, 10:33

0 Replies

11403 Views

Last post by chrisrms
03 Aug 2017, 10:33
Imperial Units

Last post by drice « 01 Aug 2017, 05:34
Replies: 8
by drice » 11 Jan 2017, 04:23

8 Replies

7764 Views

Last post by drice
01 Aug 2017, 05:34
Update RTE

Last post by heinrichsweikamp « 31 Jul 2017, 10:26
Replies: 25
by Longli » 06 Nov 2016, 19:50
1

2
25 Replies

120810 Views

Last post by heinrichsweikamp
31 Jul 2017, 10:26
Date Format in Logbook

Last post by Claude « 25 Jul 2017, 15:46
Replies: 2
by Claude » 22 Jul 2017, 16:06

2 Replies

5267 Views

Last post by Claude
25 Jul 2017, 15:46
Only backlight on

Last post by alex-PS « 13 Jul 2017, 12:37

by alex-PS » 13 Jul 2017, 12:37

0 Replies

13313 Views

Last post by alex-PS
13 Jul 2017, 12:37
Simulator

Last post by pplmoko « 26 Jun 2017, 21:55
Replies: 1
by pplmoko » 26 Jun 2017, 20:41

1 Replies

4159 Views

Last post by pplmoko
26 Jun 2017, 21:55
Mac sierra and bluetooth...

Last post by heinrichsweikamp « 25 Jun 2017, 12:31
Replies: 3
by pplmoko » 22 Jun 2017, 11:34

3 Replies

5580 Views

Last post by heinrichsweikamp
25 Jun 2017, 12:31
Hammerhead and OSTC4

Last post by heinrichsweikamp « 25 Jun 2017, 12:19
Replies: 1
by marc.collin » 06 Jun 2017, 04:59

1 Replies

4377 Views

Last post by heinrichsweikamp
25 Jun 2017, 12:19
Info: Subsurface android can direct import OSTC4 dives

Last post by TnT « 23 Jun 2017, 15:54
Replies: 1
by tanomogi » 23 Jun 2017, 03:52

1 Replies

6664 Views

Last post by TnT
23 Jun 2017, 15:54
Safety stop countdown

Last post by heinrichsweikamp « 20 Jun 2017, 15:42
Replies: 3
by panagio3 » 18 Jun 2017, 20:40

3 Replies

4628 Views

Last post by heinrichsweikamp
20 Jun 2017, 15:42

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