Stan any update for my last posting?
Jeremy
Card is full and has been properly overwriting oldest files for 4.5 days using continuous HD write on a Cam v2 running beta firmware 4.9.9.1159 with Samsung 256GB card formatted to exFAT standard. I can view from current datetime (23JUN2022@1955) back to 23APR2022@1200. Just updated the firmware on this v2 cam to latest beta version 4.9.9.1273 so I’ll be declaring this test successful, concluding this test, pulling card, reformat and start next test with Cam v3. Will also be testing v3 with the new version SAMSUNG PRO Endurance 256GB.
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Thanks Seapup, I predict failure around the 80-90 Gig mark 
Dont mind my sarcasm, just not holding my breath for a fix very soon despite WyzeDesmond stating that he is conducting tests with various FW versions and 256 Gig cards, posted 12 days ago on the other thread.
https://forums.wyze.com/t/v3-camera-allow-continuous-recording-more-than-9-days/212519/68
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An update has been posted on the other thread
Light at the end of the tunnel
Jeremy
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So, what’s the current status on this? Can anyone confirm that 256GB cards with exFAT are fully supported in the latest production firmware?
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If you go to SHOP and look at the Tech Specifications for all the cameras you will see they all support 256GB cards. Like this:
I currently have 256GB cards in a V2, V3 and a V3 Pro. They are working fine.
Also note: I have NEVER needed to format a new card before putting it into a camera. Just open the packaging and put into the camera and it will work.
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Successful performance of factory formatted 256GB SD Cards in PanV1, V3, V3Pro, PanV3, and OG Cams all running production firmware.
I would like an update as well. My Wyze 32GB cards are starting to fail after being in my V2 cams for over a year, with the cams set to continuous recording. I just purchased a Samsung Pro Endurance 256GB MicroSD and installed it in the front yard cam today. I plan to keep an eye on it, checking every other day for now. I also have a SanDisk 256GB High Endurance microSD on order, due to arrive on Sat. I’ll put that in back yard cam. I’ll see how they perform and report the results here.
Large SD cards in exFAT have been working in basically all camera models on public production firmware since December 2022, some of them for longer before that.
I’ve had 256GB cards in several camera models, and some 400GB cards in some cams and all have been working great with no problems for many months now. Rest assured they’re all compatible with larger cards now. 
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I have never been able to get a 256 mb card to work on my Wyze Cam v3, it just quits recording after a few days.
128 mb works fine.
That’s weird. It’s been working for everybody else for several months now. What is your firmware version on that cam? And what card are you using do you have a link to it?
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Firmware 4.36.11.4679.
Card is a Samsung EVO Plus 256mb Micro SD.
That’s weird, I even have one of those Samsung EVO Plus 256GB cards in one of my V3’s with that same production firmware version on it. I have absolutely no idea why it isn’t working for you on yours. Maybe try telling the camera to format it, or try having a computer format it to FAT32 instead of exFAT and see if that helps your particular situation. At least, those are things I would try.
Does running beta firmware 4.9.9.1159 support RTSP?
No.
I just created this account to share a solution that I found on a Reddit post. The link posted there is for the SD Card Formatter - Software that can be used on PC or Macs. - SD Memory Card Formatter for Windows/Mac - SD Association (Attention: this software here is not the same with the software recommended by other two posts above, in this thread, which Im sure it’s useful for the specified purposes from those posts. Click on the link I posted, and you’ll see that it’s totally different). One of my wyze pan cam v3 stopped recognizing any microSD cards, even though my other two identical cameras recognized the particular san disk 32GB and 256GB. I started to think it was a firmware bug that would prevent exFat file system from being recognized, and thus , it would prevent the camera to recognize the card to use it. I used the 32GB card in order to flash the firmware (as a troubleshooting step), to different older firmware versions. Then I updated again to the latest firmware (for April 2025). Even if I used my Win 11 PC to format the card and the PC recognized the card , the card would still not get recognized by this one particular camera, …and while the card was recognized by my other two identical cameras.
This confused me a lot, and made me think it was an issue with the camera reader. But after using the SD Card Formatter - software to format ( by the way, choose the option “Overwrite format” - which can take even 8 hours because it slowly rebuilds the file system on the card) I placed the 256GB exFat card in the camera, and it was recognized. The software will just rebuild the format that is already on that card (i.e. a 32GB card will have by default a FAT32 file system, and anything bigger than 32GB will have by default an exFAT system. If a person used a free software like the Mini Tool Partition Wizard to format a 32GB card to exFat and a 256GB card to FAT32, thus changing the default file system on them, the cards will have to be first formatted to the default file system, and then formatted again with the SD Card Formatter Software, in order to get the desired file system built up properly on the card again.
Hope this helps those who maybe feel that their cards are not usable anymore, when not recognized or not recording properly.
That very utility is frequently recommended here. I use it on all my SD cards (and even USB drives as those are basically just SD cards) when they are new and when one seems to be having some issues.
Full overwrite usually is not needed, however when all else fails, I’ll put a card through that. That’s usually more for determining if the card is going bad and/or is a fake, etc.
Overwrite does not do anything with the file system that the quick format doesn’t do though. Overwrite is above and beyond recreating the file system, offsets, etc, it simply writes a “0” to every bit on the card, which can help the card mark bad cells and not use them. But unfortunately once a card starts having bad cells, usually it is a domino effect and the results don’t last long.
If you’re attempting to partition a card to smaller than its actual size in order to use FAT16 or FAT32, you wouldn’t want to use the SD formatter though, as that will detect the actual size of the card and restore it back to that. Partitioning it with disk management or diskpart then using windows to format it is the way to go for that use case.
That sounds good Dave. I didnt know if other folks knew about that software. Nothing worked for me except for that SD Formatter software (no command line formatting on computer, no camera formatting on
other wyze cameras that recognized the cards, etc.) Thanks for the feedback.