Samsung A40 stuck in downloading do not turn off target. - Samsung Galaxy A40 Questions & Answers

I tried rooting with the Odin tool and used twrp-3.5.2_9-0-a40. After the phone rebooted it got stuck in a downloading do not turn off target loop. The specified error is Recovery: Error validating footer. (6) CUSTOM RECOVERY VBMETAA405FNXXU3UF2. 40954213R. Due to this error i cant boot into recovery tools and i really dont know what to do right now. If some tech wizard would guide me the right way, ill promise ill never try to root my phone again lol.

I'm late but did you unlock the bootloader ?

Related

Galaxy S5 SM-G900W8 failed to root

Hey guys,
I tried to root my gf's S5 with CF-AutoRoot's package. I got this for the specific version which I double-checked
Included in the package was Odin and the image with an "installer".
Everything was fine, device detected in Odin, selected image in AP and let it rip... Except I got an error after it was in the process, under UDC start, can't remember exactly as I had restarted the device with the loading bar at like 30% of the way... it stated something dev_state
After I restarted, I got the "Firmware upgrade encountered an issue. Please select recovery mode in Kies and try again."
I would've thought it was going to be pretty straight forward and decided not to do a backup but I'm so getting killed if I'm going to lose the data!!!
Any insight? thanks
I tried to get Samsung Kies for the recovery but under the list of devices requiring emergency recovery it won't detect it...
I managed to retry the Odin flash with the same outcome.
The error message is unsupport dev_type if that makes any sense to someone
Well issue seems to have fixed itself by flashing latest TWRP... The Odin flash went smooth and phone booted normally...
must've been something off with the AutoRoot

soft bricked my G928F

It's a long story but I soft bricked my G928F.
I bought it off Gumtree in the U.K and it had an frp lock on it, the seller stated that she had wiped it off so would not take it back. I had a read around and it seemed that Wondershare Dr. Fone would take off the frp lock........it didn't, rather it messed up the stock recovery. When attempting to enter recovery I get the following message and am stuck in a bootloop:
No Support SINGLE - SKU
Supported API: 3
dm-verity error
failed code: 0x02
E: failed to mount /cache (invalid argument)
While Odin will recognise the phone Smart Switch will not so I am unable to use the emergency recovery procedure.
I have read similar posts where it implies Smart Switch is the last resort but in my case that doesn't seem to be an option
Can anyone suggest a way to recover the phone or do I throw it in the bin? Any help appreciated
meohmy said:
It's a long story but I soft bricked my G928F.
I bought it off Gumtree in the U.K and it had an frp lock on it, the seller stated that she had wiped it off so would not take it back. I had a read around and it seemed that Wondershare Dr. Fone would take off the frp lock........it didn't, rather it messed up the stock recovery. When attempting to enter recovery I get the following message and am stuck in a bootloop:
No Support SINGLE - SKU
Supported API: 3
dm-verity error
failed code: 0x02
E: failed to mount /cache (invalid argument)
While Odin will recognise the phone Smart Switch will not so I am unable to use the emergency recovery procedure.
I have read similar posts where it implies Smart Switch is the last resort but in my case that doesn't seem to be an option
Can anyone suggest a way to recover the phone or do I throw it in the bin? Any help appreciated
Click to expand...
Click to collapse
Flash this using odin :
https://drive.google.com/uc?id=1tg9hJOCquyfuyROYtgpxyVKNbuidzdL8&export=download
Then, you will be able to flash latest version normaly, and also your will remove frp lock.
Thanks for that, I will flash it when I get home and report back.
Didn't work for me, the combination file gave an 'md5 error! Binary is invalid' message when loading into Odin, while renaming to .tar the flash failed.
firmware update start
Single download
sboot bin
param.bin
FAIL
Thanks for your suggestion though.
I tried installing firmware G928FXXS5CRH1 (VOD) but it failed at hidden system image, I removed that file and created a .tar which flashed successfully but the phone rebooted
to recovery initially but still showed a dm-verity error. I deleted the cache and then factory reset which appeared to also complete successfully but the phone would not boot up.
I then tried flashing the hidden sys image on its own but that failed and the phone went to the Smart Switch error recovery page, Smart Switch will not recognise the phone so will not allow access to the emergency recovery facility.
Still trying though if anyone has any idea's.
Hi there,
Im in the same boat. It had the verity error too.
BUT:
For me it worked to flash the 4-part firmware of the G928FXXS5CRH1 via Odin then.
The device boots again, without the verity error
It had Android 5.1 before, when I could flash the COMBINATION ROM and use it just fine.
(but it was a Android 7 combination ROM) :/
After flashing Android 7 debranded (G928FXXS5CRH1) in 4-parts (BL, AP, CC and CSC file) the FRP lock is still there of course,
but the phone is booting again without the verity error.
COMBINATION ROM will no longer let me flash it, though.
https://forum.xda-developers.com/s6-edge-plus/help/g-928f-verity-0x02-modem-bin-fail-t3886122
The download I did via the tool "samfirm" use chk32 and decrypt on downloading !
"SM-G928F_1_20180828170540_5avji4munw_fac"
Thanks for the reply, I fixed it myself in the end. I spent 2 days over Xmas until I eventually tried the solution that you have suggested. I eventually found a 4 part software. AS to the FRP lock, be it good luck or persistence, I managed to get rid of that as well using Samsung FRP Tool.
meohmy said:
Thanks for the reply, I fixed it myself in the end. I spent 2 days over Xmas until I eventually tried the solution that you have suggested. I eventually found a 4 part software. AS to the FRP lock, be it good luck or persistence, I managed to get rid of that as well using Samsung FRP Tool.
Click to expand...
Click to collapse
Hell Friend, Not sure If you could get this message, If yes, Kindly help me., I am facing the same issue with my Samsung Galaxy Note 5 (N920G/I) but could not find 4 parts FRP unlock firmware. Do let me know If anyone finds one.
Thanks!

Installing TWRP

Im posting it here bcuz i cant find my phone model btw my phine is samsung j7+ (c710f) i tried may tuts how to root j7+ and am always stuck installing twrp. In odin it says pass but when i tried to go in recovery mode for the first time i always got this messsge (warranty bit recovery (0) ) on the top of the screen and my phone restart and load fine and when i try to go back in recovery this will show
No command
This it boot into normal rexovery
Failed to recovery cause no such file or directory
I try to root my phone

S7 UFS sudden dead?

Hi there,
I got an old man's S7 Edge (SM-G935F) and I'd like to help him rescuing his photos (he doesn't have a periodic backup but he learned from this now).
The phone did stuck at the boot screen. He didn't try to modify anything.
FRP Lock on unfortunately. Should be the latest Android.
I can enter the download mode (not the recovery) but no chance for TWRP b/c of FRP. Same error for an engineering recovery I found online.
AP SUREV: B:8 K:B S:7
So I got me two OEM firmware packages with Frija and try to reflash but it always stuck at flashing "boot.img" endlessly.
Also it got me to the "An error has occurred while updating the device software, Use the Emergency recovery function in the Smart Switch PC software." screen now.
(I have no code for Smart Switch recovery but I still can get into download mode using FRP Hijacker.)
Is the NAND most likely roasted and the only hope may be chipoff? Tried on different PCs with different cables.
Thanks,
Nico
Edit: I don't need a working device, decrypted dump would be enough.
Edit 2: When I skip the AP package (containing the "boot.img.lz4"), it stucks at flashing "RADIO" after a few percent.

A20e (SM-A202F) stuck in download mode - error validating footer

Hello, i hope someone can help me. My goal was to install lineageos on the A20e. So i unlocked the bootloader succesfully. Then i wanted to install TWRP. I used heimdall for flashing (with: heimdall flash --recovery twrp.img). The process ended without any errors. But since this point the phone stuck in download mode. When i restart the phone (volume down + power) the phone runs rapidly into the download mode. On the top left corner it show an error message (look at the screenshots). I tryed to flash twrp again for two or three times and one times the orange recovery - the results are the same.
I can still reach the phone via heimdall or odin. i have downloades the latest stock rom. So i hope to unbrick the phone - but until now i have no idea how to do. Please tell me, if you know some hints. You can also post if you think its hopeless and there ist no way to unbrick the phone.
Update: I have flashed the stock rom via odin succesfully. now it starts normaly. Do i want to do a next try ;-) ...
Thread can be closed...
Thank U
Jan
Flash a blank vbmeta after flashing recovery.img, Using Heimdall

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