Develop Bugs

A520F firmware compatibility of Single SIM firmware and Dual SIM firmware

Hi guys
I known that this A5 2017 model have two types.
1) A520F - Single SIM model
2) A520F/DS - Dual SIM model
I have question of Dual SIM model and single sim model firmware compatibility.
Q#1)What if i flashed Single sim firmware (EX)AU-Vodafone, CSC:VAU) on dual sim hardware model (A520F/DS),
Is it working only Single sim mode? or it can working Dual sim mode even Single sim firmware(VAU)?
Q#2) if Q#1 is true and flashed Single sim firmware then restore to Dual sim firmware (like India, Taiwan, UAE regions firmware will support Dual SIM),
Is it restored fully dual sim mode from Single sim firmware ? I am worrying if i flashed Single sim firmware then back to Dual sim firmware, modem(Like IMEI #1, #2)/baseband information lost or not
and bootloader locked by previous(Single sim) flashed bootloader. Also it it void Knox warranty? I known that official firmware cross flash is not void know warranty, is it correct?
Thank you

Just flash with odin, know will not be triggered by flashing official firmware.
Just test it, u won't lose ur data en if anything went wrong just flash your stock firmware back.

bassbounce said:
Just flash with odin, know will not be triggered by flashing official firmware.
Just test it, u won't lose ur data en if anything went wrong just flash your stock firmware back.
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Click to collapse
Thanks for your advance.
I will try it if i buy A520F model.
BTW ,Who have gps poor reception problem using A5 2017 model??
Some of A5 2017 users(A520S,A520F) have poor gps reception problem. They says it may hardware problem and sometimes they wont get gps signal on the Google maps even outdoor location.

Pulverizer said:
Thanks for your advance.
I will try it if i buy A520F model.
BTW ,Who have gps poor reception problem using A5 2017 model??
Some of A5 2017 users(A520S,A520F) have poor gps reception problem. They says it may hardware problem and sometimes they wont get gps signal on the Google maps even outdoor location.
Click to expand...
Click to collapse
GPS is really good, I have no problems with it.

No GPS issue here all works flawlessly, using A5 dual-SIM model
Sent from Public Phone

bassbounce said:
GPS is really good, I have no problems with it.
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Click to collapse
amlbuton said:
No GPS issue here all works flawlessly
Sent from Public Phone
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Click to collapse
Thanks for sharing exact information.

I rooted mine came with uae firmware. Installed french Firmware and everything is fine
Sent from my MI 5s using Tapatalk

rehanraza80 said:
I rooted mine came with uae firmware. Installed french Firmware and everything is fine
Sent from my MI 5s using Tapatalk
Click to expand...
Click to collapse
Hi, have you root Single SIM to DUAL Sim ? And you bought new holder for second SIM and everything is ok? Which FW have did you use?

Flash SM-A520F/DS with a SM-A520F firmware?

Hello there,
Recently I bought a Samsung A5 2017 in Indonesia (model dual sim) and would like to know if it's possible to put a french firmware (so a firmware of SM-A520F) on SM-A520F/DS model?
Thanks for your help

Sangothen said:
Hello there,
Recently I bought a Samsung A5 2017 in Indonesia (model dual sim) and would like to know if it's possible to put a french firmware (so a firmware of SM-A520F) on SM-A520F/DS model?
Thanks for your help
Click to expand...
Click to collapse
It would be wiser to use dual sim firmware rather than single sim firmware
Sent from my SM-A520F using Tapatalk

Thanks but I don't find any dual sim firmware even on Sammobile....
Is there a risk of brick if I flash with a single sim firmware? Or maybe there's another solution?

Sangothen said:
Thanks but I don't find any dual sim firmware even on Sammobile....
Is there a risk of brick if I flash with a single sim firmware? Or maybe there's another solution?
Click to expand...
Click to collapse
I was worried too but I tried to use the normal a520f firmware and it worked fine.
BTW Some apps may not work because they will assume you are rooted eg. S HEALTH and secret mode on browser but you can actually root to get around this by editing a line in build.prop

I'm on the same boat, only with the A3: I've bought my phone as an A320F/DS (that's what the box says, and indeed it has double SIM), but when you check Settings--»About phone--»Model name, it only says A320F (without the DS). And then when you look for firmware updates in Samsung website, you only find for the A320F. Might it be that A320F/DS is only a second, alternative denomination for the A320F, being both identical? (Same would happen with the A7.)

Sangothen said:
I would like to know if it's possible to put a french firmware (so a firmware of SM-A520F) on SM-A520F/DS model?
Click to expand...
Click to collapse
It's one year since your question, but still my answer may help others:
I've flashed a SM-A320F stock firmware on my SM-A320F/DS and it works perfectly. I believe that the A series firmwares are exactly the same for single SIM and dual SIM models.

In trying to sort this out for the s7 g935f/ds, I believe I was told that indeed the F firmware is the correct firmware for both 1 and 2 sim models. There was no FDS firmware at all.

SM-A520F to SM-A520F/DS

Hello,
I have Samsung A5 2017 Single Sim (SM-A520F) and I want to know if I can convert it to Samsung A5 2017 Dual Sim (SM-A520F/DS).
If the answer is yes can you tell me how?
If install the firmware from SM-A520F/DS in my phone and use the right sim holder (sim+sd card) will be ok?
I have two phone numbers and I can't use two phones all the time.
P.S. In Europe Official Samsung A5 is the SM-A520F
Thanks for your time.

Peiragmenos said:
Hello,
I have Samsung A5 2017 Single Sim (SM-A520F) and I want to know if I can convert it to Samsung A5 2017 Dual Sim (SM-A520F/DS).
If the answer is yes can you tell me how?
If install the firmware from SM-A520F/DS in my phone and use the right sim holder (sim+sd card) will be ok?
I have two phone numbers and I can't use two phones all the time.
P.S. In Europe Official Samsung A5 is the SM-A520F
Thanks for your time.
Click to expand...
Click to collapse
I doubt it. The phone must have the hardware to read 2 SIMs. Not as eady as putting a SIM caddy. Not sure if the SS device has that hardware in place. The Moto X Play did, but dual SIM can only be done with two IMEIs. Furthermore, the legality of such a system varies from country to country

You could buy a Dual sim Adapter

I want to know...if someone has a DS version can they use a 520F firmwire!?

supertac said:
I want to know...if someone has a DS version can they use a 520F firmwire!?
Click to expand...
Click to collapse
Yes you can, I did this on my A520F/DS downloaded from the following link in sammobile
https://www.sammobile.com/firmwares/galaxy-a5/SM-A520F/

i agree with shafez because i did the same

shafez said:
Yes you can, I did this on my A520F/DS downloaded from the following link in sammobile
https://www.sammobile.com/firmwares/galaxy-a5/SM-A520F/
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Click to collapse
and it didn't affect your guys roms? its still seen as samsung offical? still using samsung pay?

No effect, everything woks fine and official.

thank you so much as soon as payment clears i'M gonna get this dual sim model and really test it (without root to start sadly)

supertac said:
thank you so much as soon as payment clears i'M gonna get this dual sim model and really test it (without root to start sadly)
Click to expand...
Click to collapse
did you convert it without problems ?? tell me to do mine to dual sim thanks

Call recording on 10+

Considering a purchase of this piece, but clear call recording is a must. Does anyone know if feature is available in the firmware like in Huawei already or app e.g. ACR that is working fine ?
Thanks in forward for your feedbacks

Acr vorking fine,atlest on exynos model

@mat111 which country fw ?

it's already available by default in the main firmware without any application

@DrNet1983 not in EU my friend

Ing.King said:
@mat111 which country fw ?
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Click to collapse
Slovenia EU country.

Proof pls, Operator & FW, where did you buy phone from ?

Its baked into the Firmware. It just needs unlocking using the correct CSC Here in the UK (EU) and its not available as an option.
Its possible to mod the device in include all.
Unfortunately the only way of doing this is via ROOT.

Acr works fine for me. Snapdragon model.

anyway to unlock it in the US ?

Acr works on mine but not over bt

Ing.King said:
Proof pls, Operator & FW, where did you buy phone from ?
Click to expand...
Click to collapse
? What proof you ned? You dont beliv me? Maybe is important I made only 4g 3g 2g calls,no wifi.

Can i flash any android 10 on G7 EAW HKG?

There's still no rumors about update to 10 Android for HKG 6/128 version. "Ay hate this sh1t"
So, could someone give a hint what ROM is it possible to flash on EAW 6/128? I mean w/o rooting, cracking boot and all that. Or there's not such ways and I should sell it with Pie and jump to somthng more actual?

Up

Billy Madison said:
There's still no rumors about update to 10 Android for HKG 6/128 version. "Ay hate this sh1t"
So, could someone give a hint what ROM is it possible to flash on EAW 6/128? I mean w/o rooting, cracking boot and all that. Or there's not such ways and I should sell it with Pie and jump to somthng more actual?
Click to expand...
Click to collapse
I've G7+EAW 6/128 HK version based on the IMEI. I upgrade to Android 10 EAW Indian version using LG UP. Download KDZ file from lgfirmwares or join Telegram group for G7 ThinQ Development, somebody have GDrive link for the kdz file.

traktopel said:
I've G7+EAW 6/128 HK version based on the IMEI. I upgrade to Android 10 EAW Indian version using LG UP.
Click to expand...
Click to collapse
Do both sim slots still work? Do all lte bands work? What about serial number anr GPay? NFC / GPay still works ok? Or maybe serial becomes 0?

Billy Madison said:
Do both sim slots still work? Do all lte bands work? What about serial number anr GPay? NFC / GPay still works ok? Or maybe serial becomes 0?
Click to expand...
Click to collapse
I've 2 SIM devices, but only use 1 SIM (another slot I use for memory card) so I don't test other SIM work or not. But in setting menu still show SIM Card 2 (grey out because no SIM inserted). I'm Indonesian, and so far LTE work normally with my telco operator. I didn't lose my IMEI and SN, both still same as previous. NFC work but don't now about GPay because it's not available in Indonesia.
Only one annoying thing, when I restart the phone, always come out notification: "current version is not available for user. Can't find matched carrier. NT-Code: FFFFFF:54". However it's seems only notification, the phone working properly.

traktopel said:
I've 2 SIM devices, but only use 1 SIM (another slot I use for memory card) so I don't test other SIM work or not. But in setting menu still show SIM Card 2 (grey out because no SIM inserted). I'm Indonesian, and so far LTE work normally with my telco operator. I didn't lose my IMEI and SN, both still same as previous. NFC work but don't now about GPay because it's not available in Indonesia.
Only one annoying thing, when I restart the phone, always come out notification: "current version is not available for user. Can't find matched carrier. NT-Code: FFFFFF:54". However it's seems only notification, the phone working properly.
Click to expand...
Click to collapse
halo gan, saya masih pake lg g7 plus indonesia resmi LG jg gan, boleh minta tolong di guide step by step supaya bisa naik ke android 10 gan? terima kasih