[Samsung Galaxy Z Flip Guides, News, & Discussion] glitchsys:
Hi iBowToAndroid, I've got nothing but mad respect for you and your posts. One of your other posts seriously helped me get my Galaxy S20 Ultra 5G unbranded. This is a great service you do for us and it's much appreciated. With the Galaxy S20 Ultra 5G though you were kind enough to upload the generic U1 firmware to AndroidFileHost as well, so I was able to get the firmware for that one from AFH. But I understand that for this phone (Z-Flip / F700) you chose to just upload the AT&T specific version since AT&T doesn't allow their firmware on other websites, again, much appreciated. But this left me searching for where to get the U1/XAA generic unbranded firmware. Your first post mentioned Frija and SamFirm...

1. I tried to use Frija but I've searched for Model SM-F700 / SM-F700U /SM-F700U1 / F700 / F700U / F700U1 with the CSC of XAA and each and everytime I got the error "Error 102: Unable to find firmware for ..."

Maybe you could help point Frija users to exactly what to put in for Model and CSC? Just let us know what to search for / input into Frija and we could use that.

2. You also mentioned SamFirm also has it. But a quick google search for SamFirm brings you to https://xdaforums.com/galaxy-tab-s/general/tool-samfirm-samsung-firmware-t2988647 and the very first thing you see is "This tool is deprecated. Please use fw.updato.com" so it seems like SamFirm is no longer being supported, but I went to the website fw.updato.com as mentioned and the only phone they have is the SM-F700F (international version). They don't have the SM-F700U or U1 that I could see.

So I was at a loss where to get the U1 firmware.

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Then the first has a link to: www.samfw.com/firmware/SM-F700U1 but that results in a 404 not found. So samfw seemed to be a bust.

The first comment also has a link the (samfrew) website: samfrew.com/model/SM-F700U1/region/ATT/ which is confusing because it has "U1" but also ATT; I thought U was for AT&T (and other US carriers) and U1 was generic. But either way, I found my way to samfrew.com/model/SM-F700U1/region/XAA/ which is consistent with your first post about using U1 and XAA in conjunction for generic. Great! But then I didn't know the difference between F700U1TBU2BTGE vs F700U1UEU2BTGE both have the same date. So that's why I posted here, trying to get some clarification on just which one to download.

HOWEVER, to help others, I found on sammobile that I could select the U1 firmware, and odd enough I could select "USA (T-Mobile) (TMB)" as the country, which again confuses me because U1 is supposed to be generic, not carrier specific; and it's more odd because there is no T-Mobile version of this phone. But I noticed sammobile then poinmted me towards "F700U1UEU2BTGE" (UE firmware) so that kind of helped make my decision for me. I chose to download F700U1UEU2BTGE from samfrew.com and I flashed it with a patched Odin and it took. The phone booted up, generic, and seems to work just fine. No AT&T or any other carrier, bloatware.

tldr; So for future people searching, if you want to change it from an AT&T branded/specific model to something Generic, go to the website samfrew.com/model/SM-F700U1/region/XAA/ and grab the latest UE image.

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Again, no disrespect intended iBowToAndroid, I absolutely did my leg work before posting. I tried my very best to find it elsewhere and through various searches. I wasn't just lazy and immediately asking for help like some others tend to do.