I responded to Lan Lee’s initial private message (as the Sofirn user) as per the instructions and said I need the code for LT1 + batteries (responded twice). No response. I will now send a new private message.
If you’re asking what Sofirn supplies, they’re button tops.
If you’re asking what will work in an LT1, the answer is button tops, but also the ‘extended flat top’ Sanyo GAs. Standard flat tops and flat tops where the positive contact is kind’a tall and comes close to the insulating wrap are a complete No-Go.
I work in IT, and I feel this so much. Having a day of that today, and this comment gave me a smile.
I appreciate that you answered the two most obvious questions they could have been asking, and that you were pretty thorough. This general attitude of helpfulness is part of the reason why I like this community so much.
I would add that a search (and probably the OP) would have also yielded the answers with only a little effort. Everyone should try to find the answer first, then ask after they are unable to find the answer (often, the answers can be found quicker by searching anyway).
You can re-program it yourself if you want to add SOS or future updates. Need to read around, but you need the PCB from oshpark, the USB programmer from fasttech and some pogo pins - cost is not massive I think it was all < $10/€10/£10 delivered (still waiting for some of it to arrive).
See the main thread on colours, looks like issues with anodising company and no time soon, which is a shame as I am waiting with my 2nd code for colours…