Samsung a30s wont boot up - Samsung Galaxy A30s Questions & Answers

Hi, I recently tried getting TWRP on my A30s(SM-A307FN). I used Odin to flash the .tar file onto the phone and it gave me a "pass" message. Since then I could only get a response from the phone when I hold volume down + power button but it doesn't boot up when I hold these buttons(I attached a video showing what the phone does when vol up + power button is held). Can anyone help me fix this?

yeah, had this problem before, sended it to repair, now works just fine

Change twrp version

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Cant boot up galaxy s i9000! :(:(

Hey guys i just got my new samsung galaxy s i9000 yesterday and i rooted it today and everything was fine, but then i uses SGS kernel flasher and flashed slayerh kernel and now i cant even get the phone to boot up, all i can do is hold down the volume button +power + home which gets me into a screen where it says Downloading do not turn off target!!, What do i do ?? Please tell me i didnt ruin this phone..
you are in download mode, at this mode you can connect to odin or heimdall to get you out of that trouble you are in
thats volume down + home + power
try volume up + home + power to get into recovery....
read up on flashing here so you can be guided to revive it. don't worry your phone is far from bricked
nothing happens when i press volume up, just the loading little white circle thingy it goes off and comes back on.. What do you mean odin ?
anyone please? Been looking for hours this is ******
Would this guide work ? Section B ?
http://forum.xda-developers.com/showthread.php?t=926399
press those buttons together then release

Bricked S7! Stuck on logo, please help

Hi All,
I recently updated my phone's BL and CP using Odin since I wanted to update my version of Superman rom to the latest. I think I might have done it in the wrong order though? (flashed bootloader before attempting to update firmware)
My phone is now stuck on the Samsung logo with the "Recovery is not seaandroid enforcing" at the top. I can get it to restart by holding the Vol Down + Power button but can't get it into Recovery / Download Mode it just keeps rebooting into the samsung logo!! I tried a quick Vol Down + Power followed by Vol Down + Power + Home but it doesn't work and keeps going back to the samsung logo
Is there any other way I can get this to boot into download mode so that I can flash an older version of the bootloader using odin?
GaMeFaNaTi3 said:
Hi All,
I recently updated my phone's BL and CP using Odin since I wanted to update my version of Superman rom to the latest. I think I might have done it in the wrong order though? (flashed bootloader before attempting to update firmware)
My phone is now stuck on the Samsung logo with the "Recovery is not seaandroid enforcing" at the top. I can get it to restart by holding the Vol Down + Power button but can't get it into Recovery / Download Mode it just keeps rebooting into the samsung logo!! I tried a quick Vol Down + Power followed by Vol Down + Power + Home but it doesn't work and keeps going back to the samsung logo
Is there any other way I can get this to boot into download mode so that I can flash an older version of the bootloader using odin?
Click to expand...
Click to collapse
Press (Vol up + Vol down + Power button) and when screen goes off quickly press (Vol down + Home button + Power button). Repeat the process until you see the green screen! It worked for me.
wadie habib said:
Press (Vol up + Vol down + Power button) and when screen goes off quickly press (Vol down + Home button + Power button). Repeat the process until you see the green screen! It worked for me.
Click to expand...
Click to collapse
One hour later I got this damn thing into Download Mode!! Phew...
I just kept the Vol Down + Power + Home buttons pressed while it kept rebooting itself (I was letting go of the buttons and pressing them again when I saw the screen turn off which wasn't working)
Not sure why the latest BL bricked my phone?! I've flashed one version before and it's now working again.
GaMeFaNaTi3 said:
One hour later I got this damn thing into Download Mode!! Phew...
I just kept the Vol Down + Power + Home buttons pressed while it kept rebooting itself (I was letting go of the buttons and pressing them again when I saw the screen turn off which wasn't working)
Not sure why the latest BL bricked my phone?! I've flashed one version before and it's now working again.
Click to expand...
Click to collapse
If you are using PH* bootloader and trying to root the system, you should only use TWRP 3.0.2.3 and best choice would be SuperSU 2.76.. Glad to hear it booted up at last!
So far I've yet to see someone truly brick an S7 since you'd need to replace the bootloader and it wont even flash a new bootloader until it's fully transfered and verified. So no worries there should always be a way out.
you can always go back to stock via Smartswitch and Rescue option.... all you need is your modelnumber and S/N.....
Phew, just went through the same problem, thanks a lot for help, guys!

A7 could not do normal boot, invalid kernel length

Hi everyone, I am having an issue with my a7 phone, when i power on it says
could not do normal boot, invalid kernel length
Click to expand...
Click to collapse
, then i connected the phone to my computer it constantly restarts and says the same thing
could not do normal boot
Click to expand...
Click to collapse
, can't enter into recovery mode, c'ant enter in download mode, even my pc and odin doesn't recognize the device at all, please help I can't afford a new one.
Thanks in advance.
Just flash stock rom with odin, conect to pc pressing vol + and vol - to get download mode
It doesn't react with + - buttons, that is why i can't flash it
What is the last OS you are running?
If the phone keeps restarting, first connect the phone to your PC via USB cable.
Then
1. Keep Vol+ and POWER pressed.
or
2. Keep Vol- and POWER Pressed.
Thank you but it seems that my motherboard is damaged
Thank you but it seems that my motherboard is damaged
I do not think it has been damaged, try pressing vol + vol- boot at the same time a couple of times and then the third release the vol + i the boot and it will restart in dowload mode. then flash with odin each of the partitions of an original rom.
good luck
juliàcarax said:
I do not think it has been damaged, try pressing vol + vol- boot at the same time a couple of times and then the third release the vol + i the boot and it will restart in dowload mode. then flash with odin each of the partitions of an original rom.
good luck
Click to expand...
Click to collapse
vol - and connect the cable, should bot in download mode
Condolences in your A7 brother
Let me explain to you...our phone have "bootclasspath" in its kernel...if this messed up you cannot do recovery or download mode. In short our phone samsung galaxy a7 2018 is hard breaked and good as dead, im sorry brother we shouldnt have messed with our phone...i understands your feelings:crying:
How do I do that?I have a problem with my phone too
dear my galaxy A750F same problem
showing could not do normal boot inval id kenrel length
i pressing vol down and up and plug in cable after press vol up and there showing massage . press vol down and power button but i many time try it's not working .
than i download obin and ap file and try to downloading but its not working and still not solve my problem .
i need your quick response and kind help
I had the same error appear on my S10 (beyond1lte) and was able to get back in to download mode by [Vol down] + Bixby + Power
h4ck3rc1 said:
I had the same error appear on my S10 (beyond1lte) and was able to get back in to download mode by [Vol down] + Bixby + Power
Click to expand...
Click to collapse
yes , plug into pc... odin flash latest twrp md5 for your device that will get you to recovery and start again
sakho1991 said:
Thank you but it seems that my motherboard is damaged
Thank you but it seems that my motherboard is damaged
Click to expand...
Click to collapse
Hello. Did you find a way to boot into your phone or atleast recover the data in the phone?
I am facing the same issue with my A8+ and i really need the data in it.
Please do let me know if you can somehow help.
PiXi_0301 said:
Hello. Did you find a way to boot into your phone or atleast recover the data in the phone?
I am facing the same issue with my A8+ and i really need the data in it.
Please do let me know if you can somehow help.
Click to expand...
Click to collapse
+1
read pit file by any tool , if the tool can read file then reflash phone if the tool can not read pit file the phone has been damaged

Samsung Galaxy A7 (2018) - No Download mode or Recovery and infinite bootloop

Hi,
Recently i was trying to apply another rom to my Samsung Galaxy A7 2018 edition and i am stuck in an infinite bootloop. I cannot enter download mode with the Volume Down and Power keys and the only thing it does is showing the logo of Samsung every 5 seconds and restarts. I have tried to built a usb jig with 300k resistors and still does not boot up in download mode to flash with odin a stock firmware. Also i left the battery to drain and now it is turned off,but when i plug in the usb cable and power it up it still goes into infinite loop. Any help?
I was trying the Android 10 Magisk root for A750F and was greeted by a similar situation after ODIN rebooted my phone after flashing Magisk image.. Anyways, don't panic, try all combination of buttons. vUP,vDN,PWR or vUP,PWR or vUP,vDWN while connected to usb.. It wasn't working for me too but i tried all combinations and it landed me to download mode where I flashed the stock rom
just press those button and connect to usb
im glad i read his, had just the same issue while flashing wrong twrp on A750FN .. yihey thx budies
how did you solve this issue.
---------- Post added at 06:54 AM ---------- Previous post was at 06:45 AM ----------
which button combination helped you. I having a similar issue. can not enter download mode.
Solution that helped me
Just Press the volume plus + volume minus + power button at once. Once the phone reboot black screen appears, Leave the power button and keep pressing the volume plus and volume minus button. It will redirect to the download mode. and reflash the room using Odin. Only use official sammobile rom file as other files may be corrupted. The issue may arise. The problem is in rom.
If any issue query me at : [email protected].
try this bro
Tantalord said:
Hi,
Recently i was trying to apply another rom to my Samsung Galaxy A7 2018 edition and i am stuck in an infinite bootloop. I cannot enter download mode with the Volume Down and Power keys and the only thing it does is showing the logo of Samsung every 5 seconds and restarts. I have tried to built a usb jig with 300k resistors and still does not boot up in download mode to flash with odin a stock firmware. Also i left the battery to drain and now it is turned off,but when i plug in the usb cable and power it up it still goes into infinite loop. Any help?
Click to expand...
Click to collapse
do one thing hold volume + and volume - buttons toggether and connect your phone to pc while holding v+ and v- buttons your phone redirect to download mode without any other logo/animation :good:
zebby12 said:
I was trying the Android 10 Magisk root for A750F and was greeted by a similar situation after ODIN rebooted my phone after flashing Magisk image.. Anyways, don't panic, try all combination of buttons. vUP,vDN,PWR or vUP,PWR or vUP,vDWN while connected to usb.. It wasn't working for me too but i tried all combinations and it landed me to download mode where I flashed the stock rom
Click to expand...
Click to collapse
icodix said:
just press those button and connect to usb
Click to expand...
Click to collapse
ikram.senguen said:
im glad i read his, had just the same issue while flashing wrong twrp on A750FN .. yihey thx budies
Click to expand...
Click to collapse
simonastani21 said:
Solution that helped me
Just Press the volume plus + volume minus + power button at once. Once the phone reboot black screen appears, Leave the power button and keep pressing the volume plus and volume minus button. It will redirect to the download mode. and reflash the room using Odin. Only use official sammobile rom file as other files may be corrupted. The issue may arise. The problem is in rom.
If any issue query me at : [email protected].
Click to expand...
Click to collapse
I have tried keeping all 3 buttons (vol up + vol down + power), tried holding vol up + vol down and then connecting to my PC (nothing happens, I always see the same screen (SAMSUNG Galaxy A7 Secured by Knox and Powered by android underneath)).
Tried vUP,vDN,PWR or vUP,PWR or vUP,vDWN while connected to PC via USB.
Tried vUP,vDN,PWR or vUP,PWR or vUP,vDWN while NOT connected to PC via USB.
Phone sometimes reboots but always gets into the screen I mentioned above.
Odin, obviously, doesn't see the phone either.
Also, adb devices command deosn't show the device in the list.
Anything else I should try?
Ah I solved it, and nobody mentions that you have to be SUPER quick!?
So you hold down vol down + power button and keep the USB cable at hand and the millisecond your phone reboots, reeeealy quickly release vol down and power and quickly afterwards press vol down + vol up and again quickly plug in your USB cable, if you did it before the Samsung logo appears you will get into Downloading... screen.
androidBanana said:
Ah I solved it, and nobody mentions that you have to be SUPER quick!?
So you hold down vol down + power button and keep the USB cable at hand and the millisecond your phone reboots, reeeealy quickly release vol down and power and quickly afterwards press vol down + vol up and again quickly plug in your USB cable, if you did it before the Samsung logo appears you will get into Downloading... screen.
Click to expand...
Click to collapse
haha nice. we have different procedures though.
simonastani21 said:
Solution that helped me
Just Press the volume plus + volume minus + power button at once. Once the phone reboot black screen appears, Leave the power button and keep pressing the volume plus and volume minus button. It will redirect to the download mode. and reflash the room using Odin. Only use official sammobile rom file as other files may be corrupted. The issue may arise. The problem is in rom.
If any issue query me at : [email protected].
Click to expand...
Click to collapse
doesn't work for me
Tantalord said:
Hi,
Recently i was trying to apply another rom to my Samsung Galaxy A7 2018 edition and i am stuck in an infinite bootloop. I cannot enter download mode with the Volume Down and Power keys and the only thing it does is showing the logo of Samsung every 5 seconds and restarts. I have tried to built a usb jig with 300k resistors and still does not boot up in download mode to flash with odin a stock firmware. Also i left the battery to drain and now it is turned off,but when i plug in the usb cable and power it up it still goes into infinite loop. Any help?
Click to expand...
Click to collapse
just plug it to ur pc while pressing vol up + down, works for me
sagar81307 said:
try this bro
do one thing hold volume + and volume - buttons toggether and connect your phone to pc while holding v+ and v- buttons your phone redirect to download mode without any other logo/animation :good:
Click to expand...
Click to collapse
Hello sir, I just want to thankyou alot this fixed my problem. I tried to install a android 13 gsi rom that I saw was compatible with my phone but the after I installed it had some bugs and I restarted my phone to go to download mode and flash a backup I had but the phone went into a bootloop with in to the recovery(i was using pbrp) and I couldnt get into download mode even to flash my stock rom. after I saw you post I tried it and it took me in to a screen that was saying you system has been corrupted and asked me if I wanted to go to download mode and said yes and flashed my rom and everything is working now
Thank you Again

[NEED HELP] Bricked my phone with low chance of any recovery

I need help urgently. I tried to change the splash screen of my Samsung Galaxy A51. I downloaded a custom param tar file, placed it in my downloads folder and used this command in adb shell to replace the older one. I did back up my old param. But there's no way I can restore it. Now, my phone when I try to start it. It doesn't even seem to turn on the screen anymore. I hear the phone vibrating every 2 seconds so I assume it keeps rebooting. I tried to enter download mode but I can't because samsung made it that you need to go into the recovery first, so I tried to go into the recovery but nope, it keeps vibrating and it's not responding to whatever I do. Is there still any hope for my phone? Thanks in advance.
Hello, I had this problem too. My phone also stopped booting into anything, even in TWRP.
For me, the resolve was to make the phone force reboot by holding power button and volume down, then immediately try to enter the downloading mode by holding volume buttons, when the screen turns off
and then you need to flash your device with your stock ROM
I understand you, that you cannot enter the recovery, but for me this method worked
I managed to solve it, the problem I had was that I was unable to boot into download mode. Because I have a samsung galaxy a51 and I did not know how to enter it. The last phone I had was a samsung galaxy s7 edge, back in the old days it was easy to enter download mode, just hold volume down, power button and home button. Now for some reason I need a cable connected to my computer and then hold volume up and down simultaneously. After I figured out how to enter download mode I flashed stock rom and phone worked again.
vigilante said:
I managed to solve it, the problem I had was that I was unable to boot into download mode. Because I have a samsung galaxy a51 and I did not know how to enter it. The last phone I had was a samsung galaxy s7 edge, back in the old days it was easy to enter download mode, just hold volume down, power button and home button. Now for some reason I need a cable connected to my computer and then hold volume up and down simultaneously. After I figured out how to enter download mode I flashed stock rom and phone worked again.
Click to expand...
Click to collapse
Hello! It is very good to hear!

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