yashsingh1/xdaforums huggingface dataset:
[Galaxy S6 Q&A, Help & Troubleshooting] Dreamfall31:
Have you had any luck? I want to as well because my battery is draining like 40% faster now that I upgraded. That and there's a few bugs that I can't get rid of that bother me quite a bit.

I've tried the various guides online using Odin3 and the ROMs from SamMobile but I can't get it to not fail. I've factory restored it multiple times and tried all of the updates to Odin 3.10. I can't get any of it to work and It's making me mad! I've tried two different PCs, made sure the drivers for reading the phones are updated and even multiple USB cords! I just want Lolipop back so I can enjoy my phone and not have it be dead halfway through my day!
[Galaxy S6 Q&A, Help & Troubleshooting] ivanox1972:
I have some problems with touch and want to try downgrade, how?
[Galaxy S6 Q&A, Help & Troubleshooting] iamronin:
Hi,

Flashing ROM from sammobile never worked for me. This is what I did.

Download the latest 5.1.1 bootloader, modem and TWRP 3.0 for your model. Flash them in odin after putting them in respective locations. If successful, the phone boots into recovery, where you can restore a 5.1.1 backup if you have any. If you don't have a backup, see that you have a ROM file ready in the phone to flash.
[Galaxy S6 Q&A, Help & Troubleshooting] tazaga:
Why it not stock working ?what is the problem ?
[Galaxy S6 Q&A, Help & Troubleshooting] iamronin:
I honestly have no idea but used to fail everytime.
[Galaxy S6 Q&A, Help & Troubleshooting] roydok:
http://justforprogrammers.blogspot.com/2015/12/downgrade-from-marshmallow-to-lollipop.html?m=1
[Galaxy S6 Q&A, Help & Troubleshooting] ivanox1972:
I think, point is from WHICH 6.0.1 to WHICH 5.1.1- generally some combinations work.

Somebody knows which??
[Galaxy S6 Q&A, Help & Troubleshooting] gianni500:
Downgrade not work for me, bootlop, no recovery mode for wipe after flash, only download mode. Knox not trip.
[Galaxy S6 Q&A, Help & Troubleshooting] matjaqe:
Cant downgrade from Android 6.0.1 to Android 5.1.1?!

Hello everyone,

I own a Samsung Galaxy S6 ( SM - G920F ) and wanted to go from the marshmallow Touchwiz surface down to Lollipop . Now I made all the steps so far as I know , so stock firmware via SamMobile downloaded ( tried three versions for my build number ) , resetet my phone , flashed via Odin and then comes the error message ( am with my phone of course in download mode ) FAIL ! appears in the upper left square in Odin and on the phone apppears binary 3 software 2 or sth like that ...

Can help me pleasee ????

Thank you very much
[Galaxy S6 Q&A, Help & Troubleshooting] talvigi:
So it means we don't have the option to go back to 5.0.2 at all neither they are going to fix the sucking auto reboots, freezes and unwanted shutdowns nor we have any known chances of having any fix from Samsung or AT&T. AT&T for me because mine is a AT&T specific black sphare 64GB 920A.
[Galaxy S6 Q&A, Help & Troubleshooting] brenner650:
I flashed successfully ITV 5.1.1 after being on ITV 6.0.1, without any problems.

But 5.0.2 you can forget wether you are on 5.1.1 or 6.0.1 as far as I know, and if you do try, you will get fail in Odin and device 3, binary 2 error.

And as for the file: 4file.pit.S6.SM-G920F.5.0.2.G920FXXU3COI9 - G920FXXU3COI9 - is 5.1.1 fw, not 5.0.2
[Galaxy S6 Q&A, Help & Troubleshooting] talvigi:
Thanks for the reply, my problem is the phone's ridiculous behavior, random reboots, auto shutdowns and sometimes freezes. If these problems can be solved with 5.1.1 or 6.0.1 I'm happy. I actually love to be on the most recent Android version and Marshmallow is doing great but not with me,

So what do you think I should do for all that crappie **** of reboots shut downs and freezes?
[Galaxy S6 Q&A, Help & Troubleshooting] brenner650:
Well first thing I would do is emergency initialization via Smart Switch with sn of the phone, and see if that helps.

It will install original CSC and latest fw for that model.

From that point on you will see what happens and is everything ok with the phone.

Dont know if you are rooted or not, but if you are not it won`t trip knox.
[Galaxy S6 Q&A, Help & Troubleshooting] talvigi:
Well Thanks again,

does the smart switch work like Kies used to do with many Galaxy devices? And as far as i live out of the US and using this AT&T G920A on a non AT&T SIM. So, my concern is whether smart switch will be able to detect and install any such firmware type of thing if i am not on AT&T?

And aay, i am not rooted, no KNOX trips as shown on the Download menu.
[Galaxy S6 Q&A, Help & Troubleshooting] paulyz:
Yesterday I back from stock MM to stock LOL without problems with Odin. Knox OK.
[Galaxy S6 Q&A, Help & Troubleshooting] Eskilomen80:
who?
[Galaxy S6 Q&A, Help & Troubleshooting] lortelli:
Hi! just a question; you'll come back from MM to LP with ODIN flashing only one file?
[Galaxy S6 Q&A, Help & Troubleshooting] paulyz:
Yes, i got LP firmware from sammobile in one file. My steps was : factory reset, flash through Odin, clear cache and that's aĺl. KNOX OK.
[Galaxy S6 Q&A, Help & Troubleshooting] lortelli:
Thanks men!
[Galaxy S6 Q&A, Help & Troubleshooting] paulyz:
just in Odin remove "auto reboot mark". After flash phone, turn off phone and enter to recovery mode to clear cache. I don't know, it's necessary, but I did that and everything went well.
[Galaxy S6 Q&A, Help & Troubleshooting] lortelli:
Perfect!!! thanks men!
[Galaxy S6 Q&A, Help & Troubleshooting] behnam_k:
hi guys. my phone is g920f and unfortunatly i made a mistake & upgrade it to 6.0.1

i tried to downgrade to 5.1.1 and 5.0.1 but on odin after starting operation failed because of nand writing or something like that!!

is there anyone know about this error!
[Galaxy S6 Q&A, Help & Troubleshooting] Rosli59564:
Nand write error probably reactivation lock:eek:N.

Sent from my SM-G925F
[Galaxy S6 Q&A, Help & Troubleshooting] behnam_k:
so what should i do!?

i tried in various PCs and various versions of odin but i had no results!

:( :(
[Galaxy S6 Q&A, Help & Troubleshooting] Rosli59564:
In download mode does it show reactivatio lock: ON?.

Sent from my SM-G925F
[Galaxy S6 Q&A, Help & Troubleshooting] behnam_k:
Yes. There is

It's written in blue color

:( ‎:(‎
[Galaxy S6 Q&A, Help & Troubleshooting] Rosli59564:
You have to turn it off in order to flash anything. Find the same firmware before you attaemoting to downgrade(i know you don't remember it). That's why smart switch is the best option.

Sent from my SM-G925F
[Galaxy S6 Q&A, Help & Troubleshooting] behnam_k:
its meens i should use smart switch to know my last firmware and download firmware from sam and use odin for flashing or use smart switch to flash my phone and smart switch will download my last firmware!?

thanks alot for your help i disabled lock.
[Galaxy S6 Q&A, Help & Troubleshooting] Rosli59564:
Smart switch will do everything for you(downloading/flashing). Or download yourself and flash it using odin. If reactivation lock is ON you can still use odin but need to be the same/last working firmware.

Sent from my SM-G925F
[Galaxy S6 Q&A, Help & Troubleshooting] behnam_k:
thank you man

i tried smart switch BUT THATS NOT WORKING FOR ME!

its not recognize my serial number! i attached screen shot from smart switch's error for me!

:crying::crying:
[Galaxy S6 Q&A, Help & Troubleshooting] Rosli59564:
Is the phone in download mode?

Sent from my SM-G925F
[Galaxy S6 Q&A, Help & Troubleshooting] behnam_k:
no its not in downloading mode.

no its not on downloading mode.

updated from 5.0.2 to 6.1.1 by OTA but many problems occured over heating ,battery drain . wifi disconnecting when using phone per minut & after power on its hold on samsung logo on start up for 2 hours after restart all of my data earased!!

now i dont use the phone to downgrade.
[Galaxy S6 Q&A, Help & Troubleshooting] behnam_k:
still not working for my serial and model name!

Its Weird.
[Galaxy S6 Q&A, Help & Troubleshooting] bsvif:
write model SM-G920T instead SM-G920F
[Galaxy S6 Q&A, Help & Troubleshooting] benjiboythelad:
Downgrading a bootloader will trip knox this is well documented
[Galaxy S 5 Q&A, Help & Troubleshooting] ofir2006:
Hey guys, I am using the g900f model, marshmallow rom android 6.0.1.

my proximity sensor broke and I followed this tutorial to disable it:

"with root explorer go to system/lib/hw and go all the way to the bottom to the last sensors file. its an so file. long press on it and open in text editor. somewhere in the page almost at the bottom you will see where it says ProximitySensor then on one of those line it should say mEnabled. just rename it to mDisabled, then reboot and the proximity sensor is fixed."

For some reason after I did it all of my sensors got disabled, proximity, gyro, light, everything.

I changed the file to it's original state by reverting the line to mEnabled and rebooted the device and everything is still disabled, phone just doesn't recognize the hardware.

On the stock rom it only disabled the proximity sensor and I had no problems reverting it, only happens on marshmallow rom...

Any ideas?

BTW can't flash another rom because my power button isn't working and I can't get it into recovery...

Thank you guys for your help.
[Galaxy S 5 Q&A, Help & Troubleshooting] *Detection*:
Boot into recovery with this

https://play.google.com/store/apps/details?id=com.siriusapplications.quickboot&hl=en_GB
[Galaxy S 5 Q&A, Help & Troubleshooting] ofir2006:
Thanks but isn't there a another way? Why did it happen?
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
Hi all, i just bought a second hand note 5. Here are the problems.

S pen does not click out and have to you use your nail.

Google apps error while retrieving information from server. (RH-01)

Downloaded antutu benchmark 5.7.5 apk and showed a score of 18000!

Startup of phone shows jelly beans going into a jar and no mention of samsung. Did he install custom rom?

Is there a test to see if its fake?

Please help. Thanks
[Galaxy Note5 Q&A, Help & Troubleshooting] JonathanRAZ:
It can be the s pen broken

It can be a custom rom

It can be fake

Download samsung phone info and verify
[Galaxy Note5 Q&A, Help & Troubleshooting] eliashadow:
Sorry...you have probably a fake note 5.

Check for sure the following application to check the phone informations.

https://play.google.com/store/apps/details?id=com.cpuid.cpu_z

Στάλθηκε από το SM-N920C μου χρησιμοποιώντας Tapatalk
[Galaxy Note5 Q&A, Help & Troubleshooting] Mohammed779:
I mean fake ones wouldnt be QHD, would be very slow, low benchmark obviously and it should never be able to run jelly bean.. if you go to about phone, you'll see software info, status, battery info, they should have N920 in them (specially baseband). Download an app like hardware info for more information about the device. But from what you described, it looks to be fake.

Sent from my SM-N920C
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
HI, This is some of the info

Model number : SM-N9200

Android 5.1.1

Imei : 355555555555555

Serial : 0123456789ABCDEF

Baseband : MOLY.WR8.W1315.MD.WG.MP.V34, 2014/09/30 12:16
[Galaxy Note5 Q&A, Help & Troubleshooting] Battlehero:
Fake IMEI number, Fake serial number.

The baseband leads to a website called 'CloneROM' which doesn't seem promising either.

You have a fake phone.
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
Hi,

Could installing a custom rom change the serial and imei number?

Thanks
[Galaxy Note5 Q&A, Help & Troubleshooting] Battlehero:
Changing the IMEI and serial number will be dependent on the hardware, a custom ROM will not change those.
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
Hi again,

Can unlocking the phone change the serial and imei number?

Thanks for all the replys so far.
[Galaxy Note5 Q&A, Help & Troubleshooting] Battlehero:
I can't answer that question since that isn't my expertise. I would advise you to contact the seller of the phone and file a complaint.
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
What should i say to the guy?
[Galaxy Note5 Q&A, Help & Troubleshooting] Battlehero:
You will obviously state what issues you have with the device.

That the device is fake.
[Galaxy Note5 Q&A, Help & Troubleshooting] ickyboo:
It's certainly 100% fake. The site for CloneRom seems to be made for Chinese fake phone makers, What they all have in common is they use a octocore MediaTek (Which Samsung would NEVER use)

https://www.clonerom.com/category/galaxy-note-5

Also if you look at the base band date, it's from 2014. The Note 5 was officially released in Aug or so 2015 which is a dead give away it's fake. Also the IMEI is fake and could actually be blocked by carrier as there could be duplicates with that IMEI so they'll just block the phone so it doesn't take down the network. Each IMEI needs to be UNIQUE.

Go get your money back ASAP and buy a REAL Note 5 or Galaxy S7 :D

Tell the guy you checked out the CPU, It's not meant to be a MediaTek (Only Exynos).

It's Running Kitkat instead of Lollipop.

It's got a bad Serial number and also bad IEMI (which is the worst thing)
[Galaxy Note5 Q&A, Help & Troubleshooting] AlirezaKhodaei:
stab him :| (after you take your money back)

end of the story
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
Hi thanks, It lags when watching youtube videos. It shudders trying to play. The phone is really laggy.
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
Hi all, used cpu-z to list info. What do you think?
[Galaxy Note5 Q&A, Help & Troubleshooting] kabuk1:
100% fake. I was a phone tech for years and I saw all kinds of chinese clones and they all had that MOLY baseband. Dead giveaway right there. Sorry man :/
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
http://browser.primatelabs.com/geekbench3/5363742

This is my phone geekbench score.
[Galaxy Note5 Q&A, Help & Troubleshooting] kabuk1:
Post a pic of your stylus, so we can see if it's just broken or a fake.
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
Here you go
[Galaxy Note5 Q&A, Help & Troubleshooting] ickyboo:
I just installed CPU-Z and everything you posted is confusing and fake, It says it's a Snapdragon 800 with 12 cores (impossible) then it mentions it's a Mediatek (MT8592) , A screen size of 9.12inchs. Ram is 4000megs (Note 5 only has 3684mb) , You internal storage says 32.00gb when it should be 25.05gb (OS takes around 5gb)

Java VM says Dalvik (Means its running Kitkat) when it should say ART.

Open GL says 2.0 , It should be 3.1 if running lolipop.

The stylus is also a fake, It's supposed to have a black rubber removable tip. Also it is supposed to say Samsung and be blue/silver coated at the end where it's supposed to click. The button on stylus should also be same colour as stylus but a little more silver

The Geekbench scores are right for a Mediatek device, Exynos 7420 in the real Note 5 simply kills that score by around 4-5 times!

https://browser.primatelabs.com/geekbench3/5364468

https://browser.primatelabs.com/geekbench3/5364476
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
Thanks to everyone who replyed. Will let you know later if i get my money back. And to the guy who said stab him and then get the money lol
[Galaxy Note5 Q&A, Help & Troubleshooting] Androidwizzard:
How much did you pay?
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
Hi all, do you think that he knew if was fake? Because he said it wax real
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
I paid £260 as i had saw some new ones for £340 - £360. Those are probably fakes too
[Galaxy Note5 Q&A, Help & Troubleshooting] Willyman:
Care to post some pictures of the phone? Sorry about your problems, but this is quite fun actually :D
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
http://www.needrom.com/download/hdc-note-5-pro/

Description:

HDC Note 5 Pro – MTK6582 – 5.5" HD / 1GB RAM & 8GB ROM

(Faked as Samsung SM-N9200 – ARM UNIVERSAL5410 – 3.0GHz – Android 5.1.1)

- Stock ROM, Rooted (flash ONLY with SP Flash Tool)

- Play Store

- Android 5.1.1 (fake!) is 4.4 KitKat

To activate or deactivate Samsung boot/shutdown logos

In the dialer type: *#*#11111#*#*

Hardware : MT6582 (UNIVERSAL5410 is Fake!)

Model : SM-N9200

Build number : LMY47X.N9200ZHU1AOGD

Build date UTC : 20150916-072753

Android v : 5.1.1

Baseband v: MOLY.WR8.W1315.MD.WG.MP.V34, 2014/09/30 12:06

Kernel v : 3.10.0-2828982 (se.infra@SEP-92) (gcc version 4.7 (GCC) ) #1 SMP Wed Sep 16 15:14:12 CST 2015

Uboot build v : —–

LCD Driver IC : 1-rm68200a_hd_dsi_vdo_wanchanglong_auo

I think my fake phone is jelly bean. Not sure what version as it say 5.1.1
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
The phone is ****. It doesnt even have enough power to run youtube videos without shuddering. Its wrong for people sell something they say is real but it is not.
[Galaxy Note5 Q&A, Help & Troubleshooting] ndasarathy:
https://www.youtube.com/watch?v=MGuK35UdZOY

Hope this might help
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
Thats the guy who sold it to me. He had that accent too....jk
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
Should there be a sticker on the box with the imei number?

Thanks
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
The guy didnt get back to me. I wish i was as bad as the guy who sold the fake phone. I could sell it and pass it on. Damn my conscience!
[Galaxy Note5 Q&A, Help & Troubleshooting] auky:
I think this is the real HDC NOTE 5. Seller was right. Are you expecting the HDC NOTE 5 to be equivalent to the Samsung Galaxy Note 5?

No pun intended but this is funny. Hope you can resolve this.
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
It was sold as a real used samsung galaxy note 5. I would not pay £250 for a used clone phone. We all need to be carefull when buying phones. If you are unsure do not buy. It is your right to walk away
[Galaxy Note5 Q&A, Help & Troubleshooting] auky:
If the ads says Samsung Note 5, you should report that to the police. Feel bad for you.
[Galaxy Note5 Q&A, Help & Troubleshooting] Mikeali_786:
Where did you by it from? If it's eBay or Amazon call them and say you got scammed and the seller won't reply to your message. Then after a while you should get a refund

---------- Post added at 04:27 AM ---------- Previous post was at 04:25 AM ----------

Also next time you buy phones check how the seller reviews are and what other people have to say. Another thing is that if the price is too good to be true then it's most likely fake unless reviews say otherwise.
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
It was on Gumtree. A criminals paradise.. That is right about price being too good. I thought £250 for a used Note 5 was ok as i the saw the note 5 new for a £500.
[Galaxy Note5 Q&A, Help & Troubleshooting] Battlehero:
I would advise reporting it to the police though I don't know if it will be on their priority list.
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
Hi again, I just saw a Samsung Galaxy Note 5 version n920i for sale. Does anyone know if the n920i will work with the Samsung GEAR VR? Just that i have heard stories about blank screens and not able to install the Oculus software.

Thankyou.
[Galaxy Note5 Q&A, Help & Troubleshooting] ickyboo:
ALL real Note5's work with the GearVR, The only problem is that some models have yet to get the new rom with the GearVR software built in. I had that problem as GearVR wasn't supported in Australia (Got the n920i) when I got my GearVR (imported a month before official AU release) but I just went and flashed a new region rom that had it. This is why people get blank screens and not be able to install the Oculus software as the when you plug in Gear VR it tells Note 5 to auto launch a app that isn't yet installed in rom.

Basically if the Gear VR is released in your country/region then your Note 5 would have support for it or would have been software updated to support it via a OTA update, Otherwise just flash a new rom. You'll have problems with the N920i if you was in the UK.. Why? Because the Note 5 was never released there so you'll just need to flash a new rom (I use Dr Ketans v10) and it'd work.
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
I cant believe how many fakes are out there. I have been looking at the Note 5 on gumtree and ebay and spotted over 10 fakes. You can tell by looking at the heart monitor as i looks like a yellow spot instead of looking more like a lens. Also the s-pen is one solid piece of metal. Do these scum bags know that they are selling fakes? Or maybe they just dont care. These clone phones are going for top doller too.

Arghhhh!
[Galaxy Note5 Q&A, Help & Troubleshooting] kabuk1:
Honestly, you could still sell it. Just make sure you state UP FRONT that it is an imitation note 5. I'm sure someone would still want it.
[Galaxy Note5 Q&A, Help & Troubleshooting] Felix arthur:
Hi sir please i just bought a used note 5 sm n920c with e following info .please can u check whether is fake or good.cos e pictures have high exposure n blurr at times.

Dis is e info

IMEI NUMBER-353410075448757

IMEI SV-01

BASEBAND VERSION-N920CXXU2BPD5

BUILDER NUMBER-MMB29K.N920CXXU2BPD6

SERIAL NUMBER-RF8972C2R3M

THANK U
[Galaxy Note5 Q&A, Help & Troubleshooting] navin_bvr:
As per the IMEI you provided, the phone is genuine. Check with Samsung service in Al Jadeed or Technoblue Al Beshairiya, may be the camera is faulty.

Note: Sorry but,please do not hijack another thread to ask questions, create a new thread to get your answer immediately.
[Galaxy Note5 Q&A, Help & Troubleshooting] Ifeelsick:
Looks real to me. If you are unsure in the future do not buy. You can normally tell if its fake by the spen. It should pop out. The fake one requires your fingernail to pull it out.
[Galaxy Note5 Q&A, Help & Troubleshooting] bonebeatz1234:
If you buy a phone off someone meet at a carrier store to verify the phone isn't black listed or stolen and also they will let you know if its legit. I only meet in the sprint store when selling or buying a phone from strangers.
[Galaxy Note5 Q&A, Help & Troubleshooting] Simonetti2011:
AndroIDentity is an app that can tell the real ID of a device. If run on a fake phone it will not be recognized as a genuine one, and if the fake is on its database, it will tell what the real manufacturer and model it is. Besides, it also identifies several other hardware and software parameters (such as the presence of Knox, JAva VM runtime, memory, screen size, and several other parameters) that will also help identifying if the device is Genuine or not. AndroIDentity recognizes 15,950 devices.

Link:

https://play.google.com/store/apps/details?id=com.alxdroiddev.gs3identity
[Verizon Galaxy S 5 Q&A, Help & Troubleshooting] smokerbond:
Hello, I am currently rooted on OK3 using the new method.

My question is can I completely wipe out all internal data via SafeStrap? Or would I have to flash via Odin?

The issue is Factory Reset does not remove a specific Malware component. So it is likely installed in system partition. Is there a way to erase all content internally via SafeStrap and then flash new ROM (so I do not have to go through root process again)?

Thanks!
[Verizon Galaxy S 5 Q&A, Help & Troubleshooting] Veid71:
have you tried going into titanium backup and freezing and deleting the malware? and what is it and howd u get it? also try a full wipe even ur sd card if you think it might be on there if not then dont worry about it also try root uninstaller from the app store and try uninstalling it that way or going into a file explorer app and deleting it in there (file explorer, root explorer, etc etc)
[Verizon Galaxy S 5 Q&A, Help & Troubleshooting] smokerbond:
Thank you for the information, but given the nature of the code, it is not possible for me to determine what it has and has not infected. Obviously I would format the SD card, but that is not my primary concern. My question is

will I be able to clear everything via Safestrap

or will I have to use Odin to do a true 100% reset.

This is a controlled test (intentionally infected device) to test how effective the malware is at evading removal.

I guess the real question I am asking is "does flashing a new rom delete all previous data"