[Q] Phone will not boot, nor enter recovery mode HELP! - Galaxy S 4 Q&A, Help & Troubleshooting

Was attempting to switch back to stock messaging app, and was using some old rom (mint jelly) with Titanium backup/rooted. I made the following changes :
unfreeze messaging app
restart bluetooth pairings
uninstall beauty face
uninstall best face
and then restarted my phone, and will not come back on? What the hell?
Will not enter recovery, at all. Just stays frozen on SAMSUNG. Not amused, please help if you can

Are you sure you are pressing the correct buttons? Volume UP + Power, when the device vibrates release the Power button and when 'Recovery Booting...' blue text appears release Volume UP button.
If you still can't enter the recovery mode there is only one option left: flash stock firmware with Odin!

jj

iJo09 said:
Are you sure you are pressing the correct buttons? Volume UP + Power, when the device vibrates release the Power button and when 'Recovery Booting...' blue text appears release Volume UP button.
If you still can't enter the recovery mode there is only one option left: flash stock firmware with Odin!
Click to expand...
Click to collapse
bah thanks, i looked at like 6 different "how to trigger recovery mode" and they were all wrong
its been months since i've done it so I'd completely forgotton
their method for download mode all worked fine, so i was worried

Damani311 said:
bah thanks, i looked at like 6 different "how to trigger recovery mode" and they were all wrong
its been months since i've done it so I'd completely forgotton
their method for download mode all worked fine, so i was worried
Click to expand...
Click to collapse
however there doesnt look like much i can do with recovery mode. the only backup is a year old and might as well be reflashing. is there some way to get into safe mode and maybe undo the changes i made in TitBackup?

To start Safe Mode you have to Power on the device with the Volume DOWN button pressed, until it boots up

Related

How to boot into recovery without adb

I noticed a lot of people having trouble booting into recovery mode from the phone. This is how to do it. With the phone turned off hold the power button +vol down button until you see the "Vibrant" logo on the screen. Once you see the logo, take your finger off the power button but keep pressing the vol down untill you see the recovery image. Ive tried every other way that people have posted and this is the only way I could get it to work. Sorry if this is already posted somewhere else but I couldnt find it. Hope this helps.
Open terminal emulator
Code:
su
reboot recovery
....Or are you not rooted yet?
And you have to hold its BOTH volume buttons not just volume down to boot into recovery.
- Hold both volume buttons
- Press power button
- When vibrant comes up, let go of power but continue to hold the two volume buttons
- Bam Recovery
I always let go of all the buttons when the Vibrant logo comes up, and it goes to recovery just fine.
Mr_Tricorder said:
I always let go of all the buttons when the Vibrant logo comes up, and it goes to recovery just fine.
Click to expand...
Click to collapse
I can second this. I am my own little vulcan deathgrip to press them all at the same time though, and still be able to release without dropping the phone.
You could also download quick reboot from the market for those already rooted, it has an option to reboot into recovery.
Sent via my Vibrant with Tapatalk Pro
ju5tiiv said:
You could also download quick reboot from the market for those already rooted, it has an option to reboot into recovery.
Click to expand...
Click to collapse
This ... or use the Reboot Into Recovery option from the Clockwork ROM Manager, which I would expect most Vibrant users to have right now if they're rooted.
What if none of this works?
I've a Vibrant (one week old) rooted. Clockwork installed KiNgxKernel-Vib-3-2.6.29.6 etc. However unless I use clockwork I can't get into recovery mode. Would really like to know a working key press combo if possible.
I read somewhere about some Vibrants being hardware locked. Assuming this is true perhaps that's what this phone is.

S4 won't boot into cwm recovery

Okay so I have the cyanogen mod flashed on my s4. But for some reason now it won't boot into cwm recovery. Any ideas?
Sent from my SGH-I337 using xda app-developers app
bboyimpact33 said:
Okay so I have the cyanogen mod flashed on my s4. But for some reason now it won't boot into cwm recovery. Any ideas?
Sent from my SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
In Developer options, enable the Advanced Reboot.
The 3 button combo will work, it's just a matter of timing. Remove and replace the battery, hold vol up + home, then power, holding all three, and when it vibrates, let go of power only.
You could also hook up in USB Debugging mode and issue the command:
adb reboot recovery
And if you don't have a developer option go into about phone and tap build number 7 times.
<=LongJohnSilver=> said:
In Developer options, enable the Advanced Reboot.
The 3 button combo will work, it's just a matter of timing. Remove and replace the battery, hold vol up + home, then power, holding all three, and when it vibrates, let go of power only.
You could also hook up in USB Debugging mode and issue the command:
adb reboot recovery
Click to expand...
Click to collapse
Some people, including myself, cannot get it to work with the standard procedure...the solution is to basically do it twice. Here's a copy/paste of the instructions:
Long press the power button and choose "power off". Give your phone a few seconds to turn off completely. Once it's off, press and hold these 3 buttons at the same time: POWER+VOLUME UP+HOME. Look at the top left of the screen - as soon as you see little blue text saying entering recovery, let go of all buttons immediately...but be ready...if your phone vibrates (it might be trying to reboot normally again), press and hold those same buttons again until you see the blue text again...then let go immediately. Now you will see your recovery!
jeffreii said:
Some people, including myself, cannot get it to work with the standard procedure...the solution is to basically do it twice. Here's a copy/paste of the instructions:
Long press the power button and choose "power off". Give your phone a few seconds to turn off completely. Once it's off, press and hold these 3 buttons at the same time: POWER+VOLUME UP+HOME. Look at the top left of the screen - as soon as you see little blue text saying entering recovery, let go of all buttons immediately...but be ready...if your phone vibrates (it might be trying to reboot normally again), press and hold those same buttons again until you see the blue text again...then let go immediately. Now you will see your recovery!
Click to expand...
Click to collapse
Cool
CWM recovery only requires you to push the volume up key and then press the power key until the phone vibrates and then let go of the power button only. When the blue lettering appears, let go of the volume up. The home button should only be required with TWRP.
scott14719 said:
CWM recovery only requires you to push the volume up key and then press the power key until the phone vibrates and then let go of the power button only. When the blue lettering appears, let go of the volume up. The home button should only be required with TWRP.
Click to expand...
Click to collapse
Whatever the reason, that is not the case with my phone and many others. I've read several threads of people having the same issue. I'm not sure if it's an issue with the OUDHS CWM w/ auto-loki or what.
I've never heard of letting go of the power button only while still pressing volume up, but I gave it a try just to see...it did get me into CWM recovery but only after doing it twice, similar to the method I wrote above.
I have tried letting go of both volume up and power (no pressing home at all) and never found a way to get into recovery.
Anyways, it seems there's no harm in pressing the home button either way and it's probably easier than letting go of the power button and still holding volume up...and easier to explain too lol.
jeffreii said:
Whatever the reason, that is not the case with my phone and many others. I've read several threads of people having the same issue. I'm not sure if it's an issue with the OUDHS CWM w/ auto-loki or what.
I've never heard of letting go of the power button only while still pressing volume up, but I gave it a try just to see...it did get me into CWM recovery but only after doing it twice, similar to the method I wrote above.
I have tried letting go of both volume up and power (no pressing home at all) and never found a way to get into recovery.
Anyways, it seems there's no harm in pressing the home button either way and it's probably easier than letting go of the power button and still holding volume up...and easier to explain too lol.
Click to expand...
Click to collapse
I'm having the same problem.
Have you found an answer or work around solution yet?
GS4 AT&T
Base version: I337UCUAMF3
Kernel: 3.4.0-812098
CWM Recovery: 6.0.3.6
rooted with SD format
Never been able to flash the rom successfully
cariboucar said:
I'm having the same problem.
Have you found an answer or work around solution yet?
GS4 AT&T
Base version: I337UCUAMF3
Kernel: 3.4.0-812098
CWM Recovery: 6.0.3.6
rooted with SD format
Never been able to flash the rom successfully
Click to expand...
Click to collapse
You need to read... Seriously, you are going to brick your phone. Do not try to install any custom recovery or ROM of any kind on MF3.
Why can't people read?
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app
bboyimpact33 said:
Okay so I have the cyanogen mod flashed on my s4. But for some reason now it won't boot into cwm recovery. Any ideas?
Sent from my SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
My minor issue is that when I boot to recovery (twrp) it get to the twrp splash screen then freeze. Takes me another reboot or two before recovery really launches.
Tried reinstalling recovery and fixing permission, etc.. but same deal. Anyone have thoughts on this?
I boot into recovery all the time but I have to hold volume up and home button.
Bump!
I'm having the same issue. What I did was that I had the CWM recovery installed and tried to reset the flash counter. Now the phone won't boot into the recovery, it just boots up as usual when I press vol up+home+power up. I appreciate any help! :/
metalfr33ak said:
Bump!
I'm having the same issue. What I did was that I had the CWM recovery installed and tried to reset the flash counter. Now the phone won't boot into the recovery, it just boots up as usual when I press vol up+home+power up. I appreciate any help! :/
Click to expand...
Click to collapse
Can you get the blue text in the upper left corner of the screen to appear at any time?
In my case, trying to get into recovery via the 3 buttons is a matter of very precise timing if I try pressing all 3 buttons at the same time. The instant I see the blue text I let go of everything and it works. Hold it for even a fraction of a second longer and the blue disappears and it goes into a normal boot. It works much better if I press Vol Up, then add Power, then add Home. I'm doing that sequence fairly quickly but the point is I'm not trying to press 3 buttons at the exact same time.
But I'm using CWM so I don't need the 3rd button...
From a powered-down state I hold Vol Up then Power and hold both through the vibration until the blue text appears and it goes into CWM recovery just fine. There seems to be a bit more leeway in terms of how fast you need to let go this way although I just tested and holding about a half second too long caused it to bounce out of recovery and do a normal boot. Let go immediately when you see the blue.
Phone won't boot..
So after using CASUAL, my phone rebooted, and got stuck on the splash screen with RECOVERY BOOTING.. in the top left corner. I pull the battery, try to do a normal reboot; takes me to the same screen. Trying the 3 button combo for recovery; same thing. Any suggestions?? I am NOT on MF3 Firmware.
**EDIT** Should have looked into it more before posting, but Found my solution returning to STOCK
im having the same problem.. i rebooted using ROM MANAGER and the android with red exclamation mark appeared... when i hold de buttons, there are blue letters, but the recovery mode dont work, just the android recovery...
edgarzin said:
im having the same problem.. i rebooted using ROM MANAGER and the android with red exclamation mark appeared... when i hold de buttons, there are blue letters, but the recovery mode dont work, just the android recovery...
Click to expand...
Click to collapse
What is the baseband version on your phone?
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
guitarpunk8403 said:
What is the baseband version on your phone?
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
hey man.. thanks for replying, baseband is MDL.. since CWM wasnt working, i installed TWRP and it is working. It offers the same results right? Im want to flash a 4.4.2 rom...
thanks.
It should....I'm stuck on safestrap, but I always used TWRP on my S3
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Locoman_ said:
My minor issue is that when I boot to recovery (twrp) it get to the twrp splash screen then freeze. Takes me another reboot or two before recovery really launches.
Tried reinstalling recovery and fixing permission, etc.. but same deal. Anyone have thoughts on this?
Click to expand...
Click to collapse
Same with my gionne ctrl v4s lollipop stock ,when i flash cwm made by mirchifood convertor but then i flash that stock recovery it works
But i really want cwm ir twrp to installl supersu and do backups

Can't get into recovery mode

Here's my problem.
I can't get into recovery by pressing the power up, home, power buttons. It says it's 'entering recovery', but then it gives another 'buzz' (like when the phone starts), and just reboots normally.
I used to be able to get into recovery with ROMManager, by selecting the 'boot into recovery'. Then I just got into my CWM and could do whatever I wanted. Now I can't do that anymore, probably because my device is not rooted atm (got CM12 on it though). I wanted to root it, but I can't get into recovery.
I already tried flashing TWRP with Odin (download mode does work), but that doesn't work either. I obviously searched google and XDA for the problem, and I saw suggestions for other phones, like updating the bootloader. But I can't find any information or files for updating the bootloader.
sebas156 said:
Here's my problem.
I can't get into recovery by pressing the power up, home, power buttons. It says it's 'entering recovery', but then it gives another 'buzz' (like when the phone starts), and just reboots normally.
I used to be able to get into recovery with ROMManager, by selecting the 'boot into recovery'. Then I just got into my CWM and could do whatever I wanted. Now I can't do that anymore, probably because my device is not rooted atm (got CM12 on it though). I wanted to root it, but I can't get into recovery.
I already tried flashing TWRP with Odin (download mode does work), but that doesn't work either. I obviously searched google and XDA for the problem, and I saw suggestions for other phones, like updating the bootloader. But I can't find any information or files for updating the bootloader.
Click to expand...
Click to collapse
Reboots trying to go custom recovery are normal sometimes.
Lil guide for enter custom recovery (TWRP):
1. Power off your device completely.
2. Press and hold Volume Up, Home and Power buttons simultaneously.
3. Release only the Power button when the logo of Samsung in white appears (you will see little letters in blue and red on the top left of the screen).
4. You will see the blue logo of TWRP (pic attached) then and you can release all buttons and start to navigate for the custom recovery.
Joku1981 said:
Reboots trying to go custom recovery are normal sometimes.
Lil guide for enter custom recovery (TWRP):
1. Power off your device completely.
2. Press and hold Volume Up, Home and Power buttons simultaneously.
3. Release only the Power button when the logo of Samsung in white appears (you will see little letters in blue and red on the top left of the screen).
4. You will see the blue logo of TWRP (pic attached) then and you can release all buttons and start to navigate for the custom recovery.
Click to expand...
Click to collapse
Thanks for the reply, but I don't think you understood my question. I know how to get into recovery when it all works. I've done it many times before. The problem is that it shuts down while booting into recovery, and then just reboots normally.
I only installed TWRP because CWM wouldn't work, but TWRP doesn't either. So I guess it has to do with how the device boots into recovery, regardless of what the recovery is.
Anyone? I kinda want to flash another ROM, but I'm unable to right now.
sebas156 said:
Anyone? I kinda want to flash another ROM, but I'm unable to right now.
Click to expand...
Click to collapse
hi
Check your power button.....it happened before , a defective power botton will make it hard to enter recovery or download mode
MAX 404 said:
hi
Check your power button.....it happened before , a defective power botton will make it hard to enter recovery or download mode
Click to expand...
Click to collapse
I don't think that's the problem. I have 0 issues with the power button. Also, when I try to boot into recovery, it actually says it's 'starting recovery'. Then it stops with a buzz and reboots.
sebas156 said:
I don't think that's the problem. I have 0 issues with the power button. Also, when I try to boot into recovery, it actually says it's 'starting recovery'. Then it stops with a buzz and reboots.
Click to expand...
Click to collapse
may be one of the other push buttons.....
try to get into recovery with out pressing the power button and see if is possible...if so then the problem is coming from there.

Recovery Is Not Seandroid Enforcing

I tried to root my phone S7 Edge 6.1.1 just a moment ago using ODIN and CF Auto Root. I got the PASSES! sign in ODIN but upon phone rebooting I am stuck on the Samsung S7 Edge logo screen with text in red 'Recovery Is Not Seandroid Enforcing" up the top.
At this time I am unable to turn my phone off, when I do it just turns back on and goes to the same screen. I can't get into download or recovery mode either.
Any help on how to fix would by greatly appreciated.
Thanks in advance.
Also thought I should add, my phone doesn't get registered when I connect it to my PC either, it wont show up in ODIN so I am unable to flash a stock recovery at this time.
It's trying to boot into recovery.
When you say you rooted with CF Auto Root, what did you do precisely? And did you follow Chainfire's specific instructions regarding the lack of screen output during the process?
Beefheart said:
It's trying to boot into recovery.
When you say you rooted with CF Auto Root, what did you do precisely? And did you follow Chainfire's specific instructions regarding the lack of screen output during the process?
Click to expand...
Click to collapse
Thanks for the reply.
I used CF-Auto-Root-zerolte-zeroltexx-smg925f.tar to root.
The steps I used was to simply put my phone into download mode and use ODIN to flash the file mentioned above. That is as far as I got unfortunately. I did this once before, a few month back when I first got the phone with no issues. I remember having to install TWRP but I couldn't remember if I did that pre-root or post-root. But I think that is where I went wrong.
Now I am unable to do anything with my phone. I can't turn it off, get into download or recovery mode. When I hold down VOL UP+POWER+HOME it just resets the phone back to the samsung logo screen.
Any ideas on what I could do?
You used the CF Auto Root file for an S6 Edge.
Beefheart said:
You used the CF Auto Root file for an S6 Edge.
Click to expand...
Click to collapse
OH GOD. You're right. I just realized that. I was supposed to have them saved into their own folders but I guess I saved that one too the wrong folder.
So what does that mean for the life of my phone then? Is it toast or is it recoverable somehow?
What is your model? Is it the SM-G935F? If so, first things first, download the correct CF Auto Root file for your device (here) and try again. Press VOL DOWN+POWER+HOME and it should reboot into Download Mode. Then try to flash the correct file in Odin again.
These phones are very difficult to hard brick, especially with something like CF Auto Root so you should be ok.
Beefheart said:
What is your model? Is it the SM-G935F? If so, first things first, download the correct CF Auto Root file for your device (here) and try again. Press VOL DOWN+POWER+HOME and it should reboot into Download Mode. Then try to flash the correct file in Odin again.
These phones are very difficult to hard brick, especially with something like CF Auto Root so you should be ok.
Click to expand...
Click to collapse
Thanks.
Yes, it is a SM-G935F. Unfortunately I am unable to reboot the phone into Download Mode. When pressing VOL DOWN+POWER+HOME it just takes me straight back to the Samsung logo where it says "Recovery Is Not Seandroid Enforcing". I'm hoping that once the battery drains completely I will be able to boot into Download Mode again.
Try simply resetting it instead. Press volume down and the power key (don't press home) for around 7-10 seconds. Once it starts to reset, remove your fingers from the buttons very briefly then press volume down, home and power to enter download mode.
Beefheart said:
Try simply resetting it instead. Press volume down and the power key (don't press home) for around 7-10 seconds. Once it starts to reset, remove your fingers from the buttons very briefly then press volume down, home and power to enter download mode.
Click to expand...
Click to collapse
That hasn't worked either unfortunately.
I just found this thread from a guy having a similar problem. He just had to wait for his phone's battery to drain completely and then he was able to enter download mode again.
You shouldn't have to though. If you can get the phone to reset at all (even if it's to make another attempt to go into recovery) then providing you time it right, you should be able to get into download mode. Did keeping your fingers on just the volume down and power buttons do anything? Keep them on continuously for up to 20 seconds and see what happens. Did you say pressing vol up & home & power made it reset and try to again get into recovery? What happens if, as soon as the screen indicated it's resetting, you remove your fingers and quickly press vol down & home & power instead?
Anyway, even if you have to wait until the phone dies, getting into download will be possible eventually. Then worst case scenario would be you having to reflash stock back. Or, as would be my preference, flash TWRP then flash a custom rom zip like Superman.
Just to confirm, I take it you selected OEM Unlock in dev options?
Beefheart said:
You shouldn't have to though. If you can get the phone to reset at all (even if it's to make another attempt to go into recovery) then providing you time it right, you should be able to get into download mode. Did keeping your fingers on just the volume down and power buttons do anything? Keep them on continuously for up to 20 seconds and see what happens. Did you say pressing vol up & home & power made it reset and try to again get into recovery? What happens if, as soon as the screen indicated it's resetting, you remove your fingers and quickly press vol down & home & power instead?
Anyway, even if you have to wait until the phone dies, getting into download will be possible eventually. Then worst case scenario would be you having to reflash stock back. Or, as would be my preference, flash TWRP then flash a custom rom zip like Superman.
Just to confirm, I take it you selected OEM Unlock in dev options?
Click to expand...
Click to collapse
I have never had any trouble getting into recovery or download before so I know the method. But just the properly clarify for you I will explain some of the combination I have tried without success. Bare in mind the phone is constantly turned on and idles on the Samsung logo.
I have tried:
Hold VOL DOWN+POWER+HOME, the phone resets and goes back to the logo.
Hold VOL DOWN+POWER, same as above.
Hold VOL UP+POWER+HOME, nothing happens at all.
Hold VOL UP+POWER, same as above.
Hold VOL DOWN+POWER+HOME, release and repress all on black screen, just goes back to logo.
Hold VOL DOWN+POWER, release and hold VOL DOWN+POWER+HOME on black screen, just goes back to logo.
and numerous other things like random combination to try and enter Download or Recovery mode, which have all failed.
Right now it's just stuck on the Samsung logo and staying there, taking forever to drain battery. I work in the morning so hopefully it is dead by then and I can get into Download mode.
Have already started download stock firmware in hopes that I will be able to flash it after.
Thanks a bunch for your help. If you think of anything else I might be able to try let me know!
Oh wow. 100+ attempts and I followed your last post about holding for up to 20 seconds. I was waiting ~5 seconds and releasing thinking that it hadn't worked.
Finally go into Download mode and will flash stock firmware and let you know how I go.
Thanks again! I owe you a cold one.
EDIT: Was no need to flash stock firmware. Just flashed the proper version of CF Auto Root and it worked. Again, thank you so much!
Fantastic. Hope you get it sorted.
On a side note, you have probably already tripped knox and you will have lost you OS data and possibly even what you have stored on internal storage. If so, I suggest you install TWRP, format data (you will lose everything with this but it removed encryption) and install a custom rom like Superman 1.9 from your external SD. It's better than plain stock and comes pre-rooted with plenty of other mods.
I can't get it to work? What keys did you held down?
This is how my screen looks
cs5-2.4pda.to/7951347.jpg (copy this link in browser)
I tried to root with Odin but I think I might have failed. How can I undo this?
recovery is not seandroid enforcing
hello,
my S7 Edge was rooted with cf-auto-root and worked fine but after 2 monthe I've installed LBE_Security_Rel_6.1.1928_A1_DE_v5_signed and reconized the message device is not tooted.
I was not very clever and cofirmed the question "fix the root problem" I don't remember exactly the words. After that root was gone.
I've flashed the stock Fw G935FXXU1APD1_G935FDRE1APC3_DRE but I still have the message "recovery is not seandroid enforcing" after trying to root with CF auto root.
AP:G935FXXU1APD1
CP:G935FXXU1APD1
CSC:G935FDRE1APC3
Is there any way to get root again
Any help on how to fix would by greatly appreciated.
Thanks in advance.
doodlemeat said:
I can't get it to work? What keys did you held down?
This is how my screen looks
cs5-2.4pda.to/7951347.jpg (copy this link in browser)
I tried to root with Odin but I think I might have failed. How can I undo this?
Click to expand...
Click to collapse
Simply hold down Home + Power + Volume Down for 10-15 seconds - don't release when the phone initially reboots and gives the same error, keep them held down and download mode will appear. I have to hold for 11 seconds, a strangely unrounded number.
Hello Guys I have this Same issue Yesterday....... This happens when you flash outdated CF Autoroot. CF Autoroot Updated on 25/08/2016... Download it...
Fix for Stuck in Logo Screen
Just Click and Hold ...... Vol Down + Menu + Power Keys ...... DO NOT RELEASE. IT Will Restart. DONT release. It will restart again and you will be download mode.
i found this during the rooting process. its a bit different to older samsungs on the s7 / s7edge. YOU HAVE TO KEEP HOLD OF VOL DOWN + HOME + POWER until it enters download mode, which can be 20-25 seconds

Can't get into recovery to save my life!

Guys, I'm wanting to get into recovery mode to wipe my Dalvik cache but for the life of me I can't get to it. I'm doing up+power+home and I go to screen saying 'Downloading do not restart target'. I guess this is download mode. How do I turn this off?
For kicks I tried down+power+home and it asks me if I want to enter download mode. Also tried up+down+power+home but this just does a normal boot.
I know this is probably something really basic but I just can't get in. I did have KingRoot installed a while back. Could this have caused the problem? Any help is greatly GREATLY appreciated. Thanks!
Hold power and volume down, then press volume up when the OS warning screen appears = download mode.
Hold power and volume up = recovery.
Don't bother with the home button. You don't need it. Should the key combinations not work correctly, you may have bad buttons on the motherboard.
Thanks for the quick reply. I double-checked my volume buttons and they work as they should (up = louder; down = softer). I tried power + up and still get the download mode screen. I even tried adb to boot into recovery and it brings me to that same 'Downloading do not restart target' screen.
Prior to writing my post above I tested my S4 to make sure I was giving correct information. Both key sequences worked on my S4.
The only thing I can think of is that you have a hardware issue with your volume down button. To test, try pressing and holding power without touching a volume button. If you enter OS warning mode without pressing a volume button, then your volume down button is worn out and needs to be replaced.
My reasoning is this.
Button failures are the most common issue with the Galaxy S4.
You instantly enter download mode by pressing power and volume up while being unable to enter recovery at all. This means you're skipping a step in accessing download mode, which wouldn't happen if all the buttons were working correctly.
Maybe, but shouldn't my phone go into recovery when I send the command to enter recovery from adb? It just reboots and goes to downloading. My buttons work fine when using the phone when android is up so I'm doubting that it is a hardware issue.
It should, but something is interfering with that. I'd go back to stock using Odin, simply to ensure all parts of the firmware match. Then see if you can get into the stock recovery with the key combo. If you are able to, then you can restore TWRP and flash a custom ROM. Otherwise the device needs to be looked at.
Thanks for the reply. I'm running the stock os without root. All I really want to do is wipe Dalvik cache. Can I do that from adb?
Yep.

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