Well I finally got a solid connection. Note: my wifi router is 8 feet away from the P1S. No problem on signal strength. I reset the P1S to factory. Removed it from Bambu Handi. Removed it from my bluetooth settings on my phone. Turned off my EPSON ET-3750. Changed the SSID and password on the router. Went through the entire process of connecting the PS1 to my account via Bambu Handy. The bluetooth connects and proceeds to finding the wifi signal from my router. Not there. I can see the SSID of the other access points in my house and neighbors but not my router. Seriously! I reboot the router and P1S to no avail. My phone can see the SSID but the P1S can not. I read somewhere that the P1S only likes to see certain WIFI channels. I had my router set to auto channel. So I set it to channel 11 and mode up to 54 mbps.
After that there it was, the SSID. The PS1 obtained a new IP address!!! I then set in my router a address reservation for that IP. So far I have not lost connection. I also have my Edison powered up. So I don’t believe the Edison was directly responsible. Both the P1S and Edison lived side by side for weeks. The problem started right after the last firmware upgrade for the P1S to version 01.07.00.00. At one point I was able to connect and downgrade the firmware to the previous version 00.00.06.49. It was that version and after changing the settings on my routers wifi that I was able to get connected. I updated back to the current firmware with the Epson also powered on. So far I have not lost connection.At first I thought maybe there was a IP conflict but I don’t think so. I am still going to point my finger at both the P1S and Epson. I might note though the Epson is direct wired with wifi turned off. So who knows.
I hope my adventure helps those who are tearing their hair out. Seems like it is a known problem with out a fix from BamBu.
Long and boring rant with some of my findings...
I struggle with random connection losses and Studio forgetting the access code ever since I got the printer.
No, incorrect - for about the first month it all went flawless, then I did the first updates…
As other people already pointed out the cheap hardware in the printer requires some getting used to.
Enterprise level WPA/WPS encryption? Just don’t bother…
Great things like ‘Smart connect’ where the router decides with band and channel is used for a device? Works really great - only until the router starts to do it’s thing when required.
Upgrading to a more modern and more capable router ? Useless as the Bambu hardware does not support anything modern.
With have VERY costly printers with connectivity option on par with a wireless thermometer and Bambu tries to tell us the problem is on OUR end - disgusting…
Here is a little sum up of what I figured out in all those months through mainly trial and error >
Whatever device you can assign a fixed IP to you should use this option!
Most modern devices and routers remember their random IP and DHCP setting but IF another device goes online while the printer is offline you might end with two devices trying to use the same IP.
The printer won’t budge and simply fail…
In some routers you can activate a MAC binding option that gives a devices the same IP every time no matter what - if your router offers this utilise it to give your printer a fixed address in your network that sticks.
5G is a no go and for the 2.4G WiFi Bambu is very picky, at least for the P1 series and below.
On certain channels it is impossible to get a connection, so if you can’t get the printer to work try to set a different channel on the router, the lower ones down to channel channel seem to work most reliable.
Ports…
It does not seem the printer or Studio require any additional ports to be opened, except for the standard ones that are usually open anyway.
If you locked down and restricted your network for security reasons you might find that with the SSID hidden/invisible the printer won’t like it.
Firewalls…
There should not be any issues with your firewall on the computer or router at least I have no encountered any - if configured correctly of course.
VPN …
Some people prefer to use a VPN and that’s a good thing, just not always for the printer and Studio.
Make sure to EXCLUDE all internal traffic from the VPN - otherwise connectivity issues will drive you mad.
Whenever something on the VPN side changes the printer AND Studio loose it and struggle badly to re-establish a connection.
This it worse if you installed the VPN on the router to not have to worry about setting up all your devices for VPN use.
Studio and nowhere mentioned requirements…
On Windows Studio relies on a WORKING IE/Edge browser - at least their vital parts.
Studio is a block collection, a script kid job.
The only thing they bothered to do otherwise is the connectivity with the sub standards used.
So if there is no way to display web based content and to use certain browser functions Studio will give you all sorts of headaches for no reason, including connection issues.
AP’s…
Don’t love a good working AP? Be it for your office printer, home security system or even those range extenders.
Blast Alive signals are helpful but they also tend to confuse the printer, causing it to disconnect for no reason.
Same story if your AP’s all use the same connection to the WWW AND come with similar names.
For example naming your AP’s WiFi2g_1, WiFi2g_2 and so forth is a really confusing thing for Bambu and (in my setup) cause ongoing issues.
IF you have such naming needs within your network then start the beginning, e.g. > 1_2g, 2_2g, 3_5g and so forth.
So where does all this nonsense originate from you wonder?
There is easy ways to communicate with devices over Wifi and there is overcomplicated ways.
Bambu decided to go past the later to claim security is paramount.
At any given time up to three different communication channels are used.
Like one for the camera feed, one to control the printer and one for status reports and such.
ALL of this could be done through a single HTTPS channels with no need for additional encryption and double authorisation for everything.
You know, like it is done for literally any other WiFi capable devices we can find…
The security measures Bambu implemented do VERY little to prevent possible abuse but they do make sure you don’t actually own your printer 
IF Bambu would have decided on a slightly more capable processor/SOC for the P1 and A1 series we would not have to deal with these flaws.
Bambu made the right business decision by going as cheap on the hardware as possible - the electronics I mean…
A tiny ESP just isn’t capable of dealing with loading things from SD calculating movements, controlling things AND providing a high bandwidth communication over Wifi.
A compromise had to be made, starting with the low end camera feed but not ending with it…
By using simple and text based communication for almost everything only very little bandwidth is required.
Bad luck if you need to transfer a huge print file, you just wait a while to complete…
But these all rely on certificates to establish secure (in Bambu terms) comms.
Same for some of the hardware in your machine - certain parts have to be ‘linked’ in order to work and that process only works with the assistance of Bambu support staff - buyer beware…
You can imagine that even this basic level of on-the-fly encryption, authorisation and decryption can bring a tiny CPU totally void of any hardware based option down to a crawl.
Hence the need for ‘brokers’ to deal with all connection needs - owners of these nice remote control tablets know all about the struggles with the MTTQ broker…
These brokers make sure the data arrives in good sized chunks and conflict free, meaning even IF conflicting orders come in through different channels the broker will determine which stream has priority/the higher or most recent command.
Similar is done for things like weather stations, home automation and such, just with hardware actually capable of doing so reliably…
We could all have it a bit easier if Bambu would at least admit to their shortcuts and cost savings in the form of a COMPREHENSIVE and up to date reference.
List WHAT works and what does not to begin with, like those WiFi channels and WPA/WPS standards and other vital details.
Provide a firmware with an open and unlocked bootloader and the tools/libraries required to compile it.
Or at the bare minimum provide a firmware free of all this bogus so connectivity is hassle free.
In all fairness though Bambu does the same as everyone else does these days - securing their products through features that do not much more than locking the user out…
If this helps anyone. Netgear Nighthawk(R) X4S R7800 router. 2.4GHZ b/g/n, channel 11, mode: up to 54 Mbps. WPA2-PSK [AES]. Added all my printers IP addresses into the Address Reservation under Lan setup. Never had a problem with the A1 or A1 mini. Just the P1S but only after the latest firmware upgrade. No idea what firmware I upgraded from though. When the P1S dropped out and you looked at it’s setting it would have the correct SSID but the IP would be 0.0.0.0.
The zero IP I had a got times and it was always loss of account information.
Once the printer knows the account again and connects to WiFi it should get a real IP.
yes mine is doing exactly the same after changing to 01.07 studio wont connect and machine will reset if i open the wifi tab and try to change anything
downgraded to 01.06 last version and the machine works fine except it thinks ive got an ams attached and odd screen glitches (ticket opened US250105557002 ) if you want to add that to your ticket i have uploaded a video to bb
My WIFI problems went away with:
Disabled WiFi Agile Multiband.