yashsingh1/xdaforums huggingface dataset:
[LG V20 Guides, News, & Discussion] liyafe1997:
I tried a lot of methods for fix my MEID but any tools like QPST/CDMA DFS/CDMA WORKSHOP all doesn't work.

Until I found this little tool, it work fine for my LG V20.

Usage: Enable Port Check Test in Hidden Menu(SVC Menu - Port Check Test). And turn on USB debugging,

Connect to PC, select Files Transfer. And you will see a COM port in device manager. (If not, you shoud install LG USB Driver)

Open this tool, select your COM port and click Connect, if your current MEID shows it means work fine.

Just enter a new MEID and click Write Hex MEID.

(Notice: The new one just type in DEC but not HEX, even it says "Write Hex MEID", I think this is a bug lol)
[LG V20 Guides, News, & Discussion] temporar:
Thanks a lot. I dropped my v20 and it turned itself off. After powering it back on, I had no mobile network connection and my imei was reported as null. Running this program and connecting, disconnecting then restarting my handset was enough to fix the issue without even having to enter my imei in the box. Thanks a million.
[LG V20 Guides, News, & Discussion] johan1234567890:
Hi. Can you share download link for this software? Please
[LG V20 Guides, News, & Discussion] joshlsspradlin:
I need it also.
[LG V20 Guides, News, & Discussion] liyafe1997:
I remember I uploaded it onto my original post.... Seems xda deleted.
[LG V20 Guides, News, & Discussion] droidtweeker559:
I used this little gem alot around 2006 2007 changes meid on cdma lg devices like a charm!!!
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
Attention!!!

It's for only US Model (G950U G950U1 G950W), not for a international (G950F).

New UPDATE! --- G950U + G950U1 + G950W BIT4 EngModem (Galaxy S8) ---

Download EngModem - http://www.mediafire.com/file/73swol3zuugmms2/G950U_G950U1_G950W_BIT4_EngModem_WithODIN.zip/file

Download link: http://www.mediafire.com/file/y7shb90oal0lx9y/COMBINATION_FA70_G950USQU4ARE1.zip

If you need v3 send me PM.
[Samsung Galaxy S8 Guides, News, & Discussion] shikhirz:
Sir what is this
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
It's Factory Binary files for who need this.

When you update latest frimware and you need change csc or how ever frp bypass etc, then you need this Factory Binary .
[Samsung Galaxy S8 Guides, News, & Discussion] brandonsisco:
Password please
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
Password : www.samkey.org/forum
[Samsung Galaxy S8 Guides, News, & Discussion] Supernoobsammyson:
Thank you, checking it out tonight.
[Samsung Galaxy S8 Guides, News, & Discussion] chetan180:
v3 please
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
I already checked this file and it's working with Binary 4 Stockrom. You're welcome.

And it's for S8+ ( G955U, G955U1, G955W)

Download link: http://www.mediafire.com/file/2d28cz8w33erszh/COMBINATION_FA70_G955USQU4ARE1.zip

Password is same.
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
https://shell.boxwares.com/Download.aspx?L=6618 Bit 3 for Only US model, not International.
[Samsung Galaxy S8 Guides, News, & Discussion] Supernoobsammyson:
that is a no go. they do not work on blv4. failed. tried all the odins out there. raymondf and prince, none work. just fails. it is signed but isnt for the s8. someting is failing. most of the time i see it fail like it did is files are not for the right model. i am on sm-g950u originally a sprint branded, now uicc unlocked. i was going for root, but cant get this evem to flash. any advice?
[Samsung Galaxy S8 Guides, News, & Discussion] MrSteelX:
Did you try using the patched 3.13 odin?
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
Hi, thank you for feedback. Again checked file. Installed and it's working with Baseband V G950USQU4CRE9.

You need patched Odin version.

Download link - http://www.mediafire.com/file/cqqogxgs7bzvz9s/Odin3_v3.13.1_3B_PatcheD.rar
[Samsung Galaxy S8 Guides, News, & Discussion] Supernoobsammyson:
Got it. Trying now. I have the raymondf version and prince version. Neither of those worked. I have seen this bbb version floating and did not try. I will now. Thank you.
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
You are welcome.

Share the result with us.
[Samsung Galaxy S8 Guides, News, & Discussion] Supernoobsammyson:
It works. Downgrades to nougat but is permissive. Playing with it now. I have an extra s8 to use as a tester. Got it to boot into factory binary. Everything is there. Just navigating and exploring what I can do now. Trial and error now. Much much appreciated. From what I have already done, you can carrier switch, so playing with it now. Thank you again.
[Samsung Galaxy S8 Guides, News, & Discussion] TheMadScientist:
our factory binary will always be nougat never will have one oreo hence the FA70 7.0 FA60 is 6.0 and FA80 is 8.0

S7 had FA60 s8 FA70 and I believe s9 has FA80

root is blocked on v3 binary so more than likely no root for this one either
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
Carrier switch possible when G950W Bit 4 frimware is available. But I waiting G950U1 Bit 4 frimware for free bloatware.
[Samsung Galaxy S8 Guides, News, & Discussion] guestx00150:
Can I use it to modify CSC of my snapdragon S8 to enable VoLTE ?

Can I use it to modify CSC of my snapdragon S8 to enable VoLTE ?

If so, kindly point me to the steps to follow.

Thanks in advance
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
For CSC modify you need a G950W (Bit 4) CSC file. Only then it's possible.

If i'm wrong please tell me. =)
[Samsung Galaxy S8 Guides, News, & Discussion] guestx00150:
Thanks. But pls consider me a noob and suggest the steps to follow.

My phone is SM-G950U on build: G950USQU4CRE9
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
Also your phone bootloader version is 4. Canada (EastLink) PDA G950WVLU4BRF5 is avaiable. Wait little bit for without EastLink or however carrier locked frimware.
[Samsung Galaxy S8 Guides, News, & Discussion] :
Thanks. My phone is unlocked (did that via an ebay seller).

If I use Canada (Eastlink) PDA file, will my phone still remain unlocked and get VoLTE ?
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
I don't know Eastlink csc file come with multi carirer or not. I advice you to wait for without Eastlink or BellMobile.
[Samsung Galaxy S8 Guides, News, & Discussion] tebrasin:
help

Is there a bypass email account android 8.0 G950U tmobile baseband version G950USQU4CRE1.
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
Hi friend. You need for Samsung or Google?
[Samsung Galaxy S8 Guides, News, & Discussion] tebrasin:
I'm looking for a Google account because I forgot my password :(
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
Don't worry, it's working and uploaded yesterday.

Link - https://www.youtube.com/watch?v=H4xRw6I78nU

Follow that's step, it will work.
[Samsung Galaxy S8 Guides, News, & Discussion] HighOnLinux:
Usually i don't ask questions often but i need some more clarification. I'm on bl4 and if i use these files onto my current S8, it'll downgrade back to nougat, make the SE permissive, while keeping everything in tact (nothing getting into a bootloop, hard brick, etc.)?

Edit: 2nd question was for a different thread, my bad :p
[Samsung Galaxy S8 Guides, News, & Discussion] tebrasin:
anarasgali

in this video there is no G950U model
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
Nope, also working with 950U version.

Download this - http://www.mediafire.com/file/dhao63xl9rdfwva/ADB_FRP.rar/file

1. Install factory binary

2. Be shure debugging options is ON

3. Open adp frp and wait for little code section.

4. Finally, reboot phone to download mode and install frimware but select "Home CSC" for "CSC" section.
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
Factory Binary won't trip knox or any bootlop and any hard brick but one time bootloader is upgraded then there is no way back to bit 3 or bit 2.

Result, downgrade to nougat is impossible.
[Samsung Galaxy S8 Guides, News, & Discussion] :
Friends,

If there's any possibility to change csc or something else to get volte on my s8 (snapdragon, usa T-Mobile originally but now unlocked), pls do oblige by sharing or pointing to the steps. Thanks in advance
[Samsung Galaxy S8 Guides, News, & Discussion] tebrasin:
I'm sorry I'm boring and which file to download combination files ?
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
I'ts combination files - http://www.mediafire.com/file/y7shb9...0USQU4ARE1.zip

Download patched ODIN - http://www.mediafire.com/file/cqqogxgs7bzvz9s/Odin3_v3.13.1_3B_PatcheD.rar/file

Follow this youtuber - https://www.youtube.com/watch?v=H4xRw6I78nU
[Samsung Galaxy S8 Guides, News, & Discussion] tebrasin:
Link invalid combination files :(
[Samsung Galaxy S8 Guides, News, & Discussion] HighOnLinux:
Thanks i had to rethink that again.
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
Use this - http://www.mediafire.com/file/y7shb90oal0lx9y/COMBINATION_FA70_G950USQU4ARE1.zip
[Samsung Galaxy S8 Guides, News, & Discussion] tebrasin:
Thank you so much for help.
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
Finally share result with us. You're welcome. If you need any help please reply this thread or send me a PM.
[Samsung Galaxy S8 Guides, News, & Discussion] chetan180:
how do i flash this file ..? its just 30mb where else which u share v4 is 900mb
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
Oh sorry for that.

Download from this site: https://androidfilehost.com/?fid=890278863836283758

Bit 3
[Samsung Galaxy S8 Guides, News, & Discussion] jasongochnour84:
forgive me for I am still very new to this and am vary much a Noob

Forgive me I am still new and learning. I just registered here even though this has been my main go-to source for information ever sence I discovered and become fascinated with developing in general.. my question is if my galaxy s8 unlocked tmobile device has been updated to G950USQS4CRE9 these files will help me downgrade back to factory firmware so I will be able to gain root access? If so how do use these files? Do I need to use them in combination with older firmware? I just want to make sure I understand so I dont learn the wrong information. Thank you in advance.
[Samsung Galaxy S8 Guides, News, & Discussion] 12manytimes:
ANYONE HAVE BINARY 4 CSC AND USERDATA???

installed RE7 from here

https://easy-firmware.com/home/browse/category/id/34157/

and as you can see the CSC and userdata are from RE2 (binary 3) so my s8 is having a bunch of wierd issues :(

thanks
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
G955U Binary 4 : http://www.mediafire.com/file/2d28cz8w33erszh/COMBINATION_FA70_G955USQU4ARE1.zip

G955U Binary 4 ENG Modem : http://www.mediafire.com/file/438kacby3s3wnau/G955U_G955U1_G955W_BIT4_EngModem_WithODIN.zip
[Samsung Galaxy S8 Guides, News, & Discussion] 12manytimes:
Thanks bro
[Samsung Galaxy S8 Guides, News, & Discussion] truwrxtacy:
i went to the samkey website but could not find a password for the zip file

edit: NVM
[Samsung Galaxy S8 Guides, News, & Discussion] turnert:
I did the same thing ?
[Samsung Galaxy S8 Guides, News, & Discussion] offiialbambamtv:
what do these files do? I'm sorry I'm a noob.
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
Go to that thread : https://xdaforums.com/galaxy-s8/how-to/snap-guide-flashing-standard-fw-carrier-t3625817
[Samsung Galaxy S8 Guides, News, & Discussion] coolpal:
can someone share the v5 files?

I updated my GS8 to v5 without thinking much :(

My main aim is to have my SM-G950U device work with at&t and Xfinity mobile, but have tethering with unlimited data plan on at&t

Right now the unlocked rom (G950U1) lets me use it with att with tethering, but xfinity wouldn't register to network. the 950U roms work with both but does not allow att tethering with unlimited data .
[Samsung Galaxy S8 Guides, News, & Discussion] f3nixx:
Device storage corrupt when use V3 combination file...

Hello,

I tell exactelly what i did maybe someone can help me....

i just flashed the combination file V3 (COMBINATION_FA70_G950USQU3ARD1_CL13344735_QB17599041_REV00_user_mid_noship_MULTI_CERT.tar) on a G950U1 (G950U1UEU3CRD4), device restarted and i see the Factory Binary menu, then i followed exactelly the video, i went to developer options menu where i found the usb debug enable button (was already ON) i turned off and just after re-turned ON, after i went to dial menu and did *#0808#, choosed the option as in video (DM+MODEM+ADB) and reboot, connected it and launched the script to bypass frp (for three times like in the video), after turned off phone and restarted in download mode to flash the firmware. I flashed the same firmware that phone has before (G950U1UEU3CRD4) and obvsiouly i put in CSC the 'HOME_CSC' file (HOME_CSC_OYM_G950U1OYM3CRD4_CL13001792_QB17717022_REV01_user_low_ship_MULTI_CERT.tar).

Untill now all ok, phone restart, seems all regular but...

...but when phone start i get the error "DEVICE STORAGE CORRUPT - The data partition has been corrupted. You need to reset your device to factory default settings. This will erase all your data" and the only thing i can do is press "RESET" button that make phone restarting ok but FRP stay ON!

If somebody have any clue on where im wrong any help is apreciated!

Of course i used Odin3 V3.13 patched to flash the S8!
[Samsung Galaxy S8 Guides, News, & Discussion] _ChiroX:
Hello,

i know im in the wrong Thread... but maybe one of you can help me.

A friend got a G950F with a locked FRP and asked me if i can help him.

The Problem is that the newest FW G950FXXU3CRGB is installed and i cant find any Combination File for it.

Is there another way how to Unlock the FRP or one of you knows where i get the Bootloader Level 3 Combination File ?
[Samsung Galaxy S8 Guides, News, & Discussion] Uribeking:
Hello, i flashed the second file of the first post, it worked, but then when i had to flash the oficial firmware odin says com 06 removen and my phone re. Starts into the factory binary mode, and I don't know what to do now to make it work ?

Then the engmode file where should i flash it bl, AP, CSC, or what can i do with that?

Finally, my device is g950w but now it says that is g950u, It was in android 8.0 binary 4

I hope anybody can help me.
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
Hi, thank you for your reply. G950F Binary 3

Here you go: http://www.mediafire.com/file/k7q57x3u2q0ptv3/COMBINATION_FA70_G950FXXU3ARG1.zip/file

Password: www.samkey.org/forum
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
It's for you: http://www.mediafire.com/file/j8xi2n73zhh37q1/COMBINATION_FA70_G950USQU5ARG4.zip

G950U Binary 5

Zip Password: www.samkey.org/forum
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
If you need to change CSC then go to "CSC Changing Galaxy S8" thread.

First download latest Binary 4 G950W frimware. Install and watch the result. If phone works then go to CSC chaning thread and follow the instructions.
[Samsung Galaxy S8 Guides, News, & Discussion] Jiiro:
Thank you for this, I will try this out!
[Samsung Galaxy S8 Guides, News, & Discussion] YT_SAM:
Help

heyI installed the files I found on the first page of the post but now I can not install stock on g950u t-mobile
[Samsung Galaxy S8 Guides, News, & Discussion] Uribeking:
Still stucked

Now , i install factory binary and it works in binary 4, then i flash frp file atached in the comments, and it seem to work , then i flash the ofw like in te atached video and it works but when the phone restarts it gets stucked in the boot logo what can i do?

Please i need help to frp my galaxy, i bought it of second hand and i get this, im noob but i need hel

My phone is g950w with binary 4 android 8.0
[Samsung Galaxy S8 Guides, News, & Discussion] Kabdullah13:
password for the .zip file

im trying to get the password to extract the zip file and the samkey forum link doesnt help. Searched the whole forum
[Samsung Galaxy S8 Guides, News, & Discussion] Hnjiii:
Combination File

Combination file For Samsung S8 G950FXXU2CRF7
[Samsung Galaxy S8 Guides, News, & Discussion] Samief1980:
Hi , I need Help with the FRP bypass for Galaxy S7 from Verizon , I have downgraded it to marshmallow and tried all methods , like Realterm and odin BL, AP , CSC , etc.. and till getting the e-mail address verification required , how do I pass that ?

Thanks
[Samsung Galaxy S8 Guides, News, & Discussion] jele:
okay stupid question I know it sounds super noobish but like I downloaded the files above (combo and eng) - I flashed Eng to CP slot because it contained "modem" file - so I obv assumed Eng would be too. It was successful first try, I restarted my phone 4 hours later (conviently when I wasn't near my pc, lol) and phone stuck in bootloop, "Galaxy S8" splash came up, then loop again, vibrate, etc. Also I believe I deleted recovery mode or something maybe I had NAND Erase clicked I really dont know, anyhow - I've noticed all this Combo files but do I flash the whole zip as one? and If so, into which slot & which options should I have checked? - do I have to maybe break up the file? if not...how do I flash it?
[Samsung Galaxy S8 Guides, News, & Discussion] dzpower16:
trying to flash SM-G950U to stock and I keep getting SW Rev Check Fail fused 5 Binary 1

could anyone point me to what file i need to use i would appreciatw greatly as it has been a week and i have search on google and youtube and i can't figure it out

VZW S8 that had had FRP lock so i flashed to combination file and now I have only binary mode when the phone boot

when i go in binary mode and check under settings i have the followings

SM-G950U

Android 8.0

Secuirty Level Feb 1 2017

baseband: G950USQU5CRF1

Kernel 4.4.16-13344735

build NRD90M.FA70_G950USQU5ARG4

Download mode I have

Carrier : VZW

RPMB fuse blow

RPMB Provisioned

Current Binary: Samsung official

System Status : Official

FRP Lock : off

warranty void 0x0.

qualcom secure boot enabled

RP SWREV B5 (2.1.1.1.1) K4 S5

secure download enabled
[Samsung Galaxy S8 Guides, News, & Discussion] jele:
fix

hey, most likely your using the wrong Odin, download the last 4 latest versions believe it or not the newest newest didn't work for me and I've got almost same setup as you except today I flashed the ****ing verzion STOCK rom onto mine instead of tmobile but trying to fix now and root once and for all
[Samsung Galaxy S8 Guides, News, & Discussion] JeepinxJosh:
If you still need this PM me... I have a simple .bat file bypass...
[Samsung Galaxy S8 Guides, News, & Discussion] jele:
so I flashed these, and I flashed the Bit4 EngModem, theres no way I can unlock the bootloader or root of some way? I noticed it had the "OEM unlock" available in DevOptions, but when I turned it on, it turns itself off, it wont stay ticked, anyone know of anything? I have a G950U with Bootloader v4 - no way I can flash TWRP or anything for that matter huh? Everything fails in Odin (Fail auth write) - EVERYTHING in Apple Update with ADB or SDCARD every single file I try to flash errors 21, signature verification, I assume that's because of the locked bootloader, I really don't know but is there ANYWAY to get TWRP on my G950U bootloader v4. blv4 ??
[Samsung Galaxy S8 Guides, News, & Discussion] adj998:
Nope. You could've used safestrap and had a rom with Xposed in it but that's only for bootloader rev2 only. You upgraded to rev4 and there's now way to downgrade. And from the looks of it the G950U is permanently patched so you have no choice but to stick with stock now
[Samsung Galaxy S8 Guides, News, & Discussion] JeepinxJosh:
what to do if on bl lvl 3

So I am using a g950u running g950usqs3re2.

i can only find 1 download for a v3 loader yet I find a lot for v4 and even a version 5.... i hear v3 is still locked way down... my question is simple... if I am running 3re2 v3 bootloader do I want to update to lvl 4 or 5 or any one? if so which one? and if not can someone please provide me with a link that works?? I have to use tethering to download these and Ive had to buy my phone plan 3 times this month to get the data needed to keep trying this.... I need this one to work... thank you so much. I am simply trying to get the combo file factory binary that is compatible with my firmware....
[Samsung Galaxy S8 Guides, News, & Discussion] AJrz5:
FRP bypass help, I have Verzion s8+ SM-955U I flashed the combination file QU4ARE1 and booted into factory binary, what do I do next?

---------- Post added at 09:21 PM ---------- Previous post was at 08:57 PM ----------

Did u ever find a solution?
[Samsung Galaxy S8 Guides, News, & Discussion] MeatyCoins:
So lets say I want to install G950U1UES5CRF5 Unlocked US version on my fresh Verizon S8, will i need any other files? Im getting it straight from Verizon so I assume it will come with bootloader v5?
[Samsung Galaxy S8 Guides, News, & Discussion] anarasgarli:
You need Binary 5 file.
[Samsung Galaxy S8 Guides, News, & Discussion] MeatyCoins:
Okay I just got the device it is G950USQU4CRE9.

It is a Verizon model. I would like to flash the USA Unlocked firmware, will be using it on T-Mobile.

Where should I start?
[Samsung Galaxy S8 Guides, News, & Discussion] JeepinxJosh:
If your not frp locked and your all good to go simply pop in the t mobile SIM card.. it will load all the apps for tmobile when it restarts.... if you want to unlock the baseband stuff and get Wi-Fi calling you should flash the tmobile bootloader 4 firmware... so if the 5th number from the end has a 4 you can flash it in odin just fine with 3.13.1b make sure it's the .1b or it won't work to flash other csc carrier files on v3 v4 or v5 firmware .

If flash the tmb firmware to get Wi-Fi calling if I was you........ as for which 4cre7 or 4whatever I dunno... I'm only on v3 so I couldn't tell ya what one is better.... read through the post. Some have better battery some are bad some are fast....
[Samsung Galaxy S8 Guides, News, & Discussion] MeatyCoins:
Okay great thanks for help. How can I flash the stock S8 firmware? I dont want all this verizon stuff.
[Samsung Galaxy S8 Guides, News, & Discussion] JeepinxJosh:
You can still however flash the 950u1 and or xaa firmware for u1 or u with the 3.13.1b odin... it will flash almost anything I think so be careful

---------- Post added at 01:49 PM ---------- Previous post was at 01:47 PM ----------

Not so far..... and not looking good... I am on v3 and still same as you...

---------- Post added at 01:54 PM ---------- Previous post was at 01:49 PM ----------

i never once used the eng modem or boot files i enabled the modem usb rda wbateber setting just in case i needed adb but since i actory reset it from inside setti gs it remived all accounts and no need for adb or bypass bat or exe... K for frp lock removal..... so this is so simple it's stupid.... flash the combo... click the top left button that has the app drawer look.... click settings... reset factory reset.... reboot to do more after it is done ... flash stock fw of your choice and reboot.. done . If any issues just factory reset after flashing stock........ profit... enjoy....so simple I wanna cry for wasting weeks doing research....
[Samsung Galaxy S8 Guides, News, & Discussion] MeatyCoins:
Okay so does it matter what version of XAA I flash? Lets just assume I dont care for the rooting or bootloader unlocking. I just want the latest unbranded S8 firmware
[Samsung Galaxy S8 Guides, News, & Discussion] JeepinxJosh:
If you want unbranded no nothing I'd flash the g950u***5*** with xaa region csc code..... yes you have to be specific once past 2**** your not able to root or get twrp.... so go for the 5re7 or 9 or whatever the lower in the alphabet is and you'll be on the latest.... for instance..... g950usqu3cre2 is older than g950usqu3cre7 and between re7 and g950usqu4ard1 the 4ard1 is newest... make sense????

---------- Post added at 02:14 PM ---------- Previous post was at 02:12 PM ----------

And a,really the u1 firmware is the unbranded as far as I know... the g950u is unlocked for carrier yet not u branded.... either way when you flash the csc and user data file I think your g on a get the apps... I know on u firmware the sum card makes it happen