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For dive logging software like Subsurface then switching the computer when you switch regs will provide more information and give you more accurate gas consumption graphs in the software. If you are not so interested in the logging then just view these as one large cylinder and it'll save you time a...

The buttons do degrade over time, I know of a few that over the years have suffered the same thing. I’ve not heard of the screen issue before though.

It may just be reaching the end of its natural lifespan.

I updated an OSTC Plus from 10.68 to 10.70 either yesterday or the day before. I used an iPhone and OSTConf

This sounds correct. Here is the extract from the manual.

T0 1.5v disposable
T1 3.6v disposable
T2 3.6v chargeable
T3/T4 permanently installed battery

Your best bet might be taking the battery out, charging it in a separate battery charger (fully or partially) and then putting it into the computer again to complete the charging cycle. Lots of us have had similar issues this year.

I believe a solution that’s been suggested in the past is to use an airtight plastic lunchbox and put the computer in it, squeeze out as much air as possible and seal the box then hopefully the reduction in pressure inside as the box flexes back to its original shape will be enough for the computer ...

Try updating wit a different method, easiest might be OSTConf on your phone

One for nitrogen and one for helium I think.

The implementations of the algorithm are slightly different on different computers but yes, they should line up to within a minute or so.

Did it record the first dive correctly? Just wondering if the first dive ever ended or whether it was only long continuous dive.

Did the computer operate correctly on the second dive?

I believe this may be possible if using Subsurface on an Android phone/tablet and connecting with a USB On-the-Go cable. I think HW have said previously that there is no retrofit currently available or even planned for the older computers.

I hit this recently on 3.11 firmware and yes, removing the battery, charging it (I charged it fully) resolved this for me.

My battery was misbehaving too recently, I removed it and charged it up in an external battery charger and i think that resolved my issue

I use Subsurface to download dives from my OSTC Plus as well as to adjust the settings like the custom text and sync time, this used to work just fine but when i tried it today it fails, i think this change is functionality came with a firmware update (I think this was ok with 3.07 firmware). I've t...

Do you have any other computer you can try with? Mac's have needed a separate driver at one point in time and then didn't need the separate driver at another point in time but I forget the exact scenario. Have you downloaded from the computer recently? This would be a way to prove the USB connection...

Perhaps try updating via another mechanism i.e. from your PC/laptop.

Maybe delete the app, reinstall it and try again.

There is something like a 5min timeout for one dive to end and the next dive to begin

Does the par stay red or if you leave the computer on the pad does it ever recover to green? I believe if the computer needs a lot of charging the charging pad will occasionally turn red to give the battery a rest during charging, it should recover again and carry on the charging if you leave it.

Updated my OSTC Plus and everything working well, thanks. Just one small comment, on the middle line of the computer where it shows Saturation, Ceiling and Tissues i don't believe this is showing saturation but rather it's showing supersaturation. I know the screen is limited on space so you can't f...

I did this same update from 10.63 to 10.64 using Subsurface 4.9.3 and it worked fine for me. I’m using Linux though in case that makes a difference

I’d have thought this would show as an ‘event’ on the dive log. I must confess I never change GFs during the dive but I know it’s possible. Could possibly be a question more for the Subsurface and libdivecomputer teams.

Subsurface (not Subsurface-mobile) does show the gradient factor, it’s on another tab along with battery voltage etc.

https://translate.google.co.uk/

then copy/paste the URL into the text box and it should give you a translated link.

fTTS is Future Time To Surface It's a prediction if what your TTS (time to surface) will be in x minutes. I have mine set at 5mins so I may have a current TTS of 3mins (a direct ascent) but a future TTS of 6mins meaning that I'm within 5mins of going into deco. I find this particularly useful when m...

Ah you got Nigel’s off him then.

I think there is a way to do it using the boot loader and a magnet but I don’t know the procedure, hope someone can tell you how to do it.