Database Develop

5 April Latest Firmware SM-A310F/D DBT A310FXXU2APC5

Try it, the new firmware is amazing. Better RAM management, better camera, more snappy experience! Battery life is a little bit shortened though, however it's a worthy sacrifice.
Flash with Odin under AP option.
https://drive.google.com/file/d/0B14IjYN3Ptxca0s1S0dhVWEwM0U/view?usp=sharing
Source: Sammobile

bootloader locked
i was flash the firmware, and my bootloader is locked,
i cant flash the other firmware anymore
message on odin when i'll try to flash other firmware
sboot.bin
Nand Write
FAIL....
.bla..bla..blaa
any solution ?

Bayoe04 said:
i was flash the firmware, and my bootloader is locked,
i cant flash the other firmware anymore
message on odin when i'll try to flash other firmware
sboot.bin
Nand Write
FAIL....
.bla..bla..blaa
any solution ?
Click to expand...
Click to collapse
Samsung A3 2016--> Settings--->(5 times tapping on the model information-->)Developers options-->unlock OEM

oem unlock already on (oem unlock : on)
but still failed when flash older firmware
sboot.bin
Nand Write
FAIL....
.bla..bla..blaa

are you sure? is this the most recent firmware? because on sammobile the first firmware is another one, 2016-04-11 (yyyy mm dd) from Turkey!
sorry, maybe this is a stupid question, but i don't know the csc/pda reading rule for understanding the most recent and the oldest

yes. this latest firmware germany state.
ar you've tried this firmware?
if you've tried, plis try downgrade to old firmware ?
i'am stuck in this firmware

There's no changelog on Sammobile !
Do changelogs exist somewhere for Samsung updates ?

what is this firmware, cant find it anywhere on the internet.

how to dow

Hello, I cannot downgrade to Nougat, I keep getting "Sw Rev Check Fail Device 2 Binary 1" on the phone side and ODIN simply says failed. When I try to downgrade from Oreo to Nougat. I have not been able to enable "OEM Unlock".
BTW, Sorry for incomplete title as the title bar disappears and I can only type a little bit.

Kenchinito said:
Hello, I cannot downgrade to Nougat, I keep getting "Sw Rev Check Fail Device 2 Binary 1" on the phone side and ODIN simply says failed. When I try to downgrade from Oreo to Nougat. I have not been able to enable "OEM Unlock".
BTW, Sorry for incomplete title as the title bar disappears and I can only type a little bit.
Click to expand...
Click to collapse
What model do you have? And what firmware version were you on before trying to downgrade? Some firmwares include bootloader updates which cannot be rolled back.

I have a N950F and this is the Oreo image I succesfully flashed "BL_N950FXXU3CRC1_CL13094739_QB17155977_REV00_user_low_ship.tar"
I can flash "COMBINATION_FA71_N950FXXU3ARA5" without a problem which is 7.1.1 But I think it's the bootloader that is giving me issues and since the combination file doesn't include a bootloader (AFAIK) it goes through, but when I try to put in any bootloader from Nougat, the flash fails.
I tried flashing:
-BL_N950FXXU1AQI1_CL12007350_QB14830234_REV00_user_low_ship.tar
-BL_N950FXXU1AQHB_CL12007350_QB14652984_REV00_user_low_ship.tar
and both failed. It's important to note that I'm trying to flash the whole thing, not just the "BL" file. I just pasted the BL file name because I think it holds the information you need.

Ok thanks for providing the info. One more question, what Odin version are you using?

It is not possible to downgrade.

sefrcoko said:
Ok thanks for providing the info. One more question, what Odin version are you using?
Click to expand...
Click to collapse
3.13.1

I have a similar problem. Bought my N950F in Panama but I'd like to change to Brazil's ZTO(unbranded) to be able to use Samsung Pay there.
I got Odin 3.13.1 and the ROM N950FXXU3CRDF_N950FOXM3CRE4_ZTO (latest 8.0.0) from SamMobile. When I try to flash I get the "Check Fail BOOTLOADER" message. Trying to uncheck the BL, I get another error but also not able to flash. Maybe my phone has a newer version that doesn't allow it to in theory "downgrade"?
Any solution?

carlosedp said:
I have a similar problem. Bought my N950F in Panama but I'd like to change to Brazil's ZTO(unbranded) to be able to use Samsung Pay there.
I got Odin 3.13.1 and the ROM N950FXXU3CRDF_N950FOXM3CRE4_ZTO (latest 8.0.0) from SamMobile. When I try to flash I get the "Check Fail BOOTLOADER" message. Trying to uncheck the BL, I get another error but also not able to flash. Maybe my phone has a newer version that doesn't allow it to in theory "downgrade"?
Any solution?
Click to expand...
Click to collapse
Yes some bootloaders can't be downgraded to earlier ones. What firmware version are you coming from?

sefrcoko said:
Yes some bootloaders can't be downgraded to earlier ones. What firmware version are you coming from?
Click to expand...
Click to collapse
@sefrcoko, I'm currently on Android 8.0.0, Baseband N950FXXU4CRG8, Build number R16NW.N950FXXU4CRGA.
I don't know if this is older or newer than the one I'm trying to flash. Is there a way to do it?
Thanks!

carlosedp said:
@sefrcoko, I'm currently on Android 8.0.0, Baseband N950FXXU4CRG8, Build number R16NW.N950FXXU4CRGA.
I don't know if this is older or newer than the one I'm trying to flash. Is there a way to do it?
Thanks!
Click to expand...
Click to collapse
Hi, yes you are on the "U4" bootloader and trying to downgrade to the "U3" bootloader (look at those characters in the build numbers, that's the bootloader version). Can't downgrade from u4 to u3 though.

sefrcoko said:
Hi, yes you are on the "U4" bootloader and trying to downgrade to the "U3" bootloader (look at those characters in the build numbers, that's the bootloader version). Can't downgrade from u4 to u3 though.
Click to expand...
Click to collapse
@sefrcoko this build number can bootloader unlock? i have same build number, i plan to unlock bootloader

paroys said:
@sefrcoko this build number can bootloader unlock? i have same build number, i plan to unlock bootloader
Click to expand...
Click to collapse
The Exynos models are all bootloader unlocked as far as I know.

sefrcoko said:
The Exynos models are all bootloader unlocked as far as I know.
Click to expand...
Click to collapse
Thanks , I'm already rooted haha:cyclops:

Can I flash everything except the bootloader? Will it work?
Do I have any option?
Thanks!

How to Downgrade to Oreo - N9500 Bootloader3

Hi.
I just received the Pie update to my Not8 256GB.
First I would like to check the actual version of my phone. I assume it's simple a N9500, but I guess I need to double confirm. How can I be 100% sure ?
Second, current my version shows N9500ZHU4DSE7. From what I have read, it should be bootloader 3. And normally I should be able to downgrade back to Oreo. I am just unsure how, and which firmware I should use.
Also if I downgrade, will I lose the phone internal data ?
Only reason why I NEED to downgrade : the software block to prevent using 2 sims and one sd card !

CrazyKoala said:
Hi.
I just received the Pie update to my Not8 256GB.
First I would like to check the actual version of my phone. I assume it's simple a N9500, but I guess I need to double confirm. How can I be 100% sure ?
Second, current my version shows N9500ZHU4DSE7. From what I have read, it should be bootloader 3. And normally I should be able to downgrade back to Oreo. I am just unsure how, and which firmware I should use.
Also if I downgrade, will I lose the phone internal data ?
Only reason why I NEED to downgrade : the software block to prevent using 2 sims and one sd card !
Click to expand...
Click to collapse
"N9500"ZHU4DSE7 is SM-N9500
N9500ZHU"4"DSE7 is the bootloader version. You are on ver. 4
You can't go back to bootloader version 3 or below! Bootloader won't allow it!
Fine the last oreo bootloader ver. That has bl. Ver 4 in the firmware.
Yes you would lose your data going from pie to oreo!
The last oreo firmware is N9500ZCU4CSA1 look on sammobile.com for your model and firmware.

Thank you for confirming what I also managed (in the meantime) to confirm.
Losing all data is a NO go for me
I could back up everything with Smart Switch, but not the entire Secure Folder

BluePhnx said:
"N9500"ZHU4DSE7 is SM-N9500
N9500ZHU"4"DSE7 is the bootloader version. You are on ver. 4
You can't go back to bootloader version 3 or below! Bootloader won't allow it!
Fine the last oreo bootloader ver. That has bl. Ver 4 in the firmware.
Yes you would lose your data going from pie to oreo!
The last oreo firmware is N9500ZCU4CSA1 look on sammobile.com for your model and firmware.
Click to expand...
Click to collapse
i tried to downgrade with this N9500ZCU4CSA1 version but still its saying failed plz help me i want to downgrade to oreo

asifuddin009 said:
i tried to downgrade with this N9500ZCU4CSA1 version but still its saying failed plz help me i want to downgrade to oreo
Click to expand...
Click to collapse
Which firmware are you on?
If you are on the latest firmware with N9500ZU"5".... you can NOT go back to Oreo!
Or if on N9500ZU"4".... try this below....
Did you try factory resetting your device before flashing that firmware.
Use all 4 files, AP, CP, BL, and with the CSC file (not the home-CSC file).

Can I flash a C432 rom on a C431 device?

I'm on the stock rom BAH2-W19 8.0.0.230 C431 in Germany and the unlock procedure doesn't work. I was wondering if downgrading to a previous version would let the unlocking procedure work and if it is required or not to maintain the same 'version' on the downgraded rom.
In short: on this firmware BAH2-W19 8.0.0.230 C431, can i flash a older one like BAH2-W19 8.0.0.179(C431) or maybe this other one BAH2-W19 8.0.0.217(OCEC432) ?

P4p3r1n0 said:
I'm on the stock rom BAH2-W19 8.0.0.230 C431 in Germany and the unlock procedure doesn't work. I was wondering if downgrading to a previous version would let the unlocking procedure work and if it is required or not to maintain the same 'version' on the downgraded rom.
In short: on this firmware BAH2-W19 8.0.0.230 C431, can i flash a older one like BAH2-W19 8.0.0.179(C431) or maybe this other one BAH2-W19 8.0.0.217(OCEC432) ?
Click to expand...
Click to collapse
Generally (well known for various other Huawei phones), submodel and cust must be followed.
They can be changed, aka rebranded, but only with unlocked Bootloader, since it requires flashing OEMInfo
Also, be careful when downgrading, if you go to an old version of Bootloader (usually it coincides to before GPU Torbo or firmwares with Security patch from the first half of 2018 or earlier), then it causes a serious brick.
To the other side, downgrading to the same Bootloader version does not help to ease getting the BL code.
Btw, Bootloader version can be inspected from a particular Hex address from xloader img, which can be extracted from update.app by Huawei UpdateExtracror (Windows program), that must be unzipped from update.zip, downloaded from a FullOTA firmware from FF
For that reason, people use Testpoints method to erase and then flash the old firmware (board image, if available for the particular device) to be able to downgrade the BL, and thus to be able to buy BL code the old way, simply based on providing IMEI and Serial number

zgfg said:
They can be changed, aka rebranded, but only with unlocked Bootloader
Click to expand...
Click to collapse
This means that the ROM i'd have to download has to be of the same branding (C431). At least here, to flash a C432 for downgrading would not work.
zgfg said:
be careful when downgrading, if you go to an old version of Bootloader
Click to expand...
Click to collapse
My intention was to downgrade the firmware so that it would flash a previous version of the bootloader. You understood the point
zgfg said:
unzipped from update.zip, downloaded from a FullOTA firmware from FF
Click to expand...
Click to collapse
What is FF ?
So, in short, if I really want to downgrade the firmware, I have to download a ROM from FF* of the same brand (C431), then extract the xloader img using the Extractor tool, compare this to my current version of the firmware and re-download any other ROM from FF until I see that the downloaded ROM has got a previous version of the bootloader. Flash this particular ROM. Is that correct?
I have not fully understood the "Testpoints method". Is it a real (documented) Method for flashing?
Thanks for your answer, it helped! Waiting now for this last feedback but until then, thank you!

P4p3r1n0 said:
This means that the ROM i'd have to download has to be of the same branding (C431). At least here, to flash a C432 for downgrading would not work.
My intention was to downgrade the firmware so that it would flash a previous version of the bootloader. You understood the point
What is FF ?
So, in short, if I really want to downgrade the firmware, I have to download a ROM from FF* of the same brand (C431), then extract the xloader img using the Extractor tool, compare this to my current version of the firmware and re-download any other ROM from FF until I see that the downloaded ROM has got a previous version of the bootloader. Flash this particular ROM. Is that correct?
I have not fully understood the "Testpoints method". Is it a real (documented) Method for flashing?
Thanks for your answer, it helped! Waiting now for this last feedback but until then, thank you!
Click to expand...
Click to collapse
FF = Firmware Finder.
Find a thread on XDA, search for XDA Huawei FirmwareFinder.
There is the FF apk on Playstore and FF exe for PC, you can also search firmwares directly from their server:
https://pro-teammt.ru/online-firmware-database-ru/
You don't really need to extract xloader.img (there is also a thread on XDA for Huawei Update Extractor and there was a thread for a special PC program analyzing the required bytes in xloader.img).
Instead, you can read Changelogs by FF, and you will see when there was the upgrade to GPU Turbo, and also which Google Security Patch is coming with which version.
Hence, in short - your intention was to 'cheat' by downgrafing to the old Bootloader, so that you can get the BL code easy and cheap.
Unfortunately, do not go for - you will brick your Huawei device.
(Many people tried similarly, with various Huawei phone models, and bricked them)
For TestPoints search similarly for XDA Huawei TestPoints. Generally, you have to physically open the phone, find the TestPoints pins (picturures can be found on the Net) on the motherboard, two of them have to be shortened
Then you will need a special Huawei loader and USB driver (there is one for Windows and one for Linux), and a board image to flash (there are sites on the Net selling the board images).
That way you can unbrick the phones or downgrade (as you wanted) to the older firmware (with the older Bootloader version)

P4p3r1n0 said:
My intention was to downgrade the firmware so that it would flash a previous version of the bootloader.
Click to expand...
Click to collapse
I realized there is not much to gain if I'd flash a previous bootloader. The original issue was that I thought I couldn't 'unlock' this one, instead I can and did it (check out the unlock thread).
All the others information are still useful, so thank you!

Is it possible to downgrade the firmware?

Is it possible to downgrade to older firmware? At the moment I have this years September patch. Without rooting or unlocking if possible.

vbaros said:
Is it possible to downgrade to older firmware? At the moment I have this years September patch. Without rooting or unlocking if possible.
Click to expand...
Click to collapse
Every few months samsung will update the bootloader along with the firmware. You can only downgrade to an older firmware so long as it has the same bootloader version as what you are currently running. Not possible to downgrade bootloader even with root unfortunately.

Philnicolls89 said:
You can only downgrade to an older firmware so long as it has the same bootloader version as what you are currently running. Not possible to downgrade bootloader even with root unfortunately.
Click to expand...
Click to collapse
Is there a list of firmwares where you can see the bootloader version?

vbaros said:
Is there a list of firmwares where you can see the bootloader version?
Click to expand...
Click to collapse
The bootloader version number is written in the firmware version. Go to sammobile and browse the firmwares for your phone model to compare.
Example:
The latest October firmware for my s10+ is G975FXXS9DTI8. The '9' before the DTI8 represents the bootloader.
Im currently on the September firmware which is G975FXXU8DTH7. The '8' before the DTH7 represents the bootloader.
So when I decide to update, there will be no going back.
Hope this helps