[Q] Nexus S i9020A - No cellular connection after updating to 2.3.6 - Nexus S Q&A, Help & Troubleshooting

I am using Nexus S i9020A (unlocked).
After updating to 2.3.6 (GRK39F), I lost all cellular connections (voice and data) effectively making it useless.
There is a page on Google Support for people like me who have faced this same problem.
google.com/support/forum/p/Google+Mobile/thread?tid=6946203d6a4d4b2f&hl=en
I successfully installed stock 2.3.3 but I still do not have voice & data. I also tried Cyanogenmod stable 7.0.3
Though the images above did flash the radio back to KB1/KB3, I also manually flashed a couple of radios that I knew worked with my phone previously. Still I do not have voice or data.
Is there a way to make my phone work again?
Thanks..

I suspect that the new baseband has invalidated something in your efs folder. Make a backup of your efs folder before you do anything else. Team Win Recovery Project offers this ability in their custom recovery image.
You should then check the radio thread in development and follow method 2 for restoring data, very very carefully.
Sent from the future to put right what once went wrong.

Just fixed mine last night with the same problem... download the UCKD1 radio... flash via fastboot
After that go into development and look for the radio thread u can't miss it. Should be one of the top threads on here... Should Read Nexus S Radios.... on the very first page scroll down to 3G Connection.... make sure u have Root Explorer ... if u don't ... go into 4shared.com and download it there its the 2.16 version [shhhh] lol follow the instructions by copying the 3 files in the EFS Folder and place all three into root of SD.... after that simply back out. Btw you can copy the files via root explorer by press and holding for the pop up. Turn phone off and on... =] should be OK. Remember back up your esf file and never use Rom Manager unless u wanna risk it.
Sent from my Nexus S using xda premium

No, you don't copy the files, you move them. This is so
you have the originals should something go wrong when they are regenerated. Copying the entire folder achieves the same thing and is less fiddly.
Read the radio post.
Sent from the future to put right what once went wrong.

I copied them and I'm ok
Sent from my Nexus S using xda premium

thanks to both of you!!
my phone's working fine now.

i have one of the white nexus s models that were being sold on negri electronics before at+t introduced theirs. mine is still stock, will this fix work on my stock, unrooted handset?
eric b

No u need root access and root explorer... have to use command prompt
Sent from my Nexus S using xda premium

cool, thanks for the answer.
eric b

Woo! you guys nailed it. Remove 3 files from efs directory and it's all good.
Thanks!

Related

Restore Stock 1.47.651.1 OTA Rom WITHOUT ROOT

There's been some confusion about how to get back to a stock rom without root in case you want to bring your phone back for warranty or return. First off this is basically this method is the first half of this thread from whitslack:
ttp://forum.xda-developers.com/showthread.php?t=715915
But the forum title is so misleading that when people do a search they will glimpse over it simply because it says it's to root the phone. However, only the second half of the instructions show you how to root it. So... here's instructions on how to do it.
1. Download the stock rom.zip. (For some reason I can't post links so you'll have to find it here = ttp://forum.xda-developers.com/showthread.php?t=728766&highlight=stock+rom
2. Rename rom.zip to PC36IMG.zip
3. Copy it on the root of your sdcard
4. Power Down or Turn off Phone - (Not Reboot)
5. Hold down Power and Volume Down (Let go when you see white screen)
6. Wait for HBOOT to scan for PC36IMG.zip
7. It will ask for you to accept after scanning - press volume up for yes
8. After finishing - it will ask to reboot - volume up for yes
9. You're done (Stock Unrooted)
Also, yes there is the RUU exe way and if that works for you, great! but there's a lot of people having trouble doing that and if you're here reading this you're probably one of them.
Just run the RUU for that OTA and you'll be back in stock.
That does not work for everyone, this always works.
I don't think this will restore the 1.40 PRI. Can anyone confirm / refute?
I thought this was just to get things back to stock. My WIFI does not work, nor does my facebook contacts sync.
so i don't have root and none of those work..lol wtfff
jmglidden said:
I don't think this will restore the 1.40 PRI. Can anyone confirm / refute?
Click to expand...
Click to collapse
My PRI shows up as 1.34_003.
ruu for 1.47
I could not verify but when I use the 1.47 when I had wimax wiped out and it put a different MAC address.
Hi, thank you for clarifying. Was searching for some time for how to do this as I need to return my Evo to Sprint.
Do I understand that it's as simple as downloading the file, renaming it, let HBoot run it and that's it?? Really...100% back to stock?
Root will be eliminated, nand will be locked and my custom recovery method (Amon RA) also gone??
I have: (See attached too)
HBoot-0.76.2000
Radio 2.05.00.06.10 (latest)
Wimax 25641_R01 (latest)
Sent from my HTC Evo 4G using XDA App
Newbie_from_NJ said:
Hi, thank you for clarifying. Was searching for some time for how to do this as I need to return my Evo to Sprint.
Do I understand that it's as simple as downloading the file, renaming it, let HBoot run it and that's it?? Really...100% back to stock?
Root will be eliminated, nand will be locked and my custom recovery method (Amon RA) also gone??
I have: (See attached too)
HBoot-0.76.2000
Radio 2.05.00.06.10 (latest)
Wimax 25641_R01 (latest)
Sent from my HTC Evo 4G using XDA App
Click to expand...
Click to collapse
I used this method earlier this week and had my phone replaced by Sprint. It flashed back to stock recovery and Hboot.
What about all the directories in the root location of the SD card?
There's a lot of stuff there, i.e., nandroid, etc....
Sent from my HTC Evo 4G using XDA App
Newbie_from_NJ said:
What about all the directories in the root location of the SD card?
There's a lot of stuff there, i.e., nandroid, etc....
Sent from my HTC Evo 4G using XDA App
Click to expand...
Click to collapse
Then format the sdcard.

delete

delete
This is why I hate 1 click methods. Best way would be to find your stock rom and flash the partitions through fastboot
This should get you going...
http://forum.xda-developers.com/showthread.php?t=1061855
You could also use Odin to restore phone back to stock.
Sent from my Nexus S 4G using xda premium
delete
That one is bad ! Seen few people flashing 4G rom bundle on their NS, and haven't seen anyone fixing frequencies problem . Apparently 4G bundles change something that wipe/format can't fix.
Hope there's some manual fix, because more and more people reporting this problem. Someone with dev experience should know where to look, i guess...
The freq fix may be achieved by deleting three files in the efs folder, but you must be very careful. Follow method 2 in the radio thread in the dev section. Make a backup first.
Sent from the future to put right what once went wrong.
bedalus said:
The freq fix may be achieved by deleting three files in the efs folder, but you must be very careful. Follow method 2 in the radio thread in the dev section. Make a backup first.
Sent from the future to put right what once went wrong.
Click to expand...
Click to collapse
He would need to get back on the correct rom/radio for his phone........before trying your suggestion
Sent from my Nexus S 4G using xda premium
xnaquada said:
First of all, thank you so much for replying to my post and the help.
A quick Q:
Will trying this thru CWM will fail b/c my phone at the moment thinks its a NS4G when its a NS. (I haven't tried it out of fear of bricking). I ask because I notice CWM will be removed on reboot thus taking away a "safety net" of sorts.
----
Click to expand...
Click to collapse
It may fail. That's why I recommended flashing the individual partitions via fastboot.
Sent from my Nexus S 4G using xda premium
[Solved]
delete

update phone first before custom ROM

ok, so i've read what i think i need to root and install a custom ROM (i think i want to try eagles blood 2.8 first http://forum.xda-developers.com/showthread.php?t=1124522)
just got my G2x on Monday and it has GB 2.3.3 but i have not checked if it has an update and not sure i want to update it first, but that is my question.
should i do an update first before i do anything else or does it even matter? i mean i will root, then do a backup, then install the ROM, right? so it shouldnt matter if the phone is the latest and greatest from LG or T-Mobile as i will be overwriting it anyway...at least that is how i think it works
also i have seen where people are saying to wipe everything (or at least a few folders), how is that done? just delete what is in the folders or is there a tool to wipe said data?
No OTA updates are available, but is unnecessary anyway. Also, no need to root if you want to flash these roms as they already have root access. Flash clockworkmod (search for the thread on that) then flash the rom you want. All the instructions are there.
Sent from my LG-P999 using xda premium
thanks, i didnt even want to try the update, but since you said there isnt one, i tried and sure enough, i have the latest already
OTA=over the air? i've seen that one a few times, some new acronyms here i need to learn
this is what i was going to do first
http://forum.xda-developers.com/showthread.php?t=1255214
1st Root your phone. Then Flash cwm thru nv flash. This is the only way if you want to manually boot into recovery
Sent from my LG-P999 using XDA App
chrisram88 said:
1st Root your phone. Then Flash cwm thru nv flash. This is the only way if you want to manually boot into recovery
Sent from my LG-P999 using XDA App
Click to expand...
Click to collapse
No need to root before nvflashing cwm.
Yes, OTA is "over the air". And just so you know, make sure you follow those nvflash steps EXACTLY as written. What you are choosing to flash, however, is the completely stock (although rooted) version of android 2.3.3 that you already have on your phone. This is fine, but after you get cwm you can flash any custom rom you find within the development section as well. I recommend at least choosing cm7 because the stock rom sucks.
Sent from my LG-P999 using xda premium
e4e5nf3nc6 said:
No need to root before nvflashing cwm.
Yes, OTA is "over the air". And just so you know, make sure you follow those nvflash steps EXACTLY as written. What you are choosing to flash, however, is the completely stock (although rooted) version of android 2.3.3 that you already have on your phone. This is fine, but after you get cwm you can flash any custom rom you find within the development section as well. I recommend at least choosing cm7 because the stock rom sucks.
Sent from my LG-P999 using xda premium
Click to expand...
Click to collapse
gotcha, so that thread is the one i need to follow?
http://forum.xda-developers.com/showthread.php?t=1056847
This one. It's actually linked as the first step in your thread. This is the important one. Read it over a couple times first, and maybe watch some videos too.
Everything after that step in your thread is basically how to flash a custom rom. They are just choosing a rooted version of stock as their example.
Sent from my LG-P999 using xda premium
root first if you want to backup any of the apps on the phone.
i rooted , clockworked , backed up the phone then copied the int and ext sd roms to my pc. installed titanium and backed up all the apps in the stock rom i thought i might want to keep. ( mostly the nova demo and need for speed) . copy your rom contents over so if you mistakenly format your sd card you can still return the phone to stock. ( don't ask i did it ) tryed cm7 stable. liked it but had sleep of death issues. returned the phone to stock . messed with the stock apps and root explorer backed everything up again. and now im ruing weapon r and love it. no stutter and smooth as a hot knife going thru butter and no sleep of death! and USB works every time. even love the loader he used.
ok followed the steps here
http://forum.xda-developers.com/showthread.php?t=1060715
then here (which is actually referenced first in the above thread)
http://forum.xda-developers.com/showthread.php?t=1056847
and then here (which is done after you do the stuff in the above thread)
http://forum.xda-developers.com/showthread.php?t=1255214
i put eagles blood 2.8 on it and it seems to be doing ok.
couple of things, dont know if this is a theme issue, but it no longer says 4G, it has a letter H instead
also i moved the notification bar to the bottom but cant remember where to change that back to the top
that looks good. don't for get to copy off the internal and external sd chips and keep that data safe. when you made your backup in clockwork it stored it on the internal chip. titanium by default i be leave uses the external. if any thing goes wrong, as long as you have access to those backups and can boot to clockwork you can get your phone working.
dodgefan67 said:
ok followed the steps here
http://forum.xda-developers.com/showthread.php?t=1060715
then here (which is actually referenced first in the above thread)
http://forum.xda-developers.com/showthread.php?t=1056847
and then here (which is done after you do the stuff in the above thread)
http://forum.xda-developers.com/showthread.php?t=1255214
i put eagles blood 2.8 on it and it seems to be doing ok.
couple of things, dont know if this is a theme issue, but it no longer says 4G, it has a letter H instead
also i moved the notification bar to the bottom but cant remember where to change that back to the top
Click to expand...
Click to collapse
The h is the same as 4g. There are mods to change those icons that can be found on xda. As far as the status bar, I think that setting is located somewhere in the tablet tweaks menu.
Sent from my LG-P999 using xda premium
e4e5nf3nc6 said:
The h is the same as 4g. There are mods to change those icons that can be found on xda. As far as the status bar, I think that setting is located somewhere in the tablet tweaks menu.
Sent from my LG-P999 using xda premium
Click to expand...
Click to collapse
yes in the tablet tweaks, thanks
but now i have a bigger problem. i dont seem to have any network access now, 4g, 3g, edge, nothing. i can make calls and send texts, but no data. should i start a new thread?
dodgefan67 said:
yes in the tablet tweaks, thanks
but now i have a bigger problem. i dont seem to have any network access now, 4g, 3g, edge, nothing. i can make calls and send texts, but no data. should i start a new thread?
Click to expand...
Click to collapse
Occasionally on cm7 based roms data will drop out and u need to reboot to bring it back...if u haven't already, try a reboot.
Sent from my LG-P999 using xda premium
JuEv0splash said:
Occasionally on cm7 based roms data will drop out and u need to reboot to bring it back...if u haven't already, try a reboot.
Sent from my LG-P999 using xda premium
Click to expand...
Click to collapse
DOH! yup that was it, reboot brought it back. thanks!
so like i posted before it shows an H instead of 4G so i'm assuming that stands for HSPA?
Yeah that's it. How are you liking the rom? Bear in mind that now you have root access you can do all sorts of customizations. You can flash kernels that allow for overclocking or underclocking, use titanium backup (recommended) to preserve all apps and app data, modify boot animations and status bar icons, basically anything you want. Enjoy!
Sent from my LG-P999 using xda premium
im liking it so far, and yeah i understand about root access, i've done linux admin and use debian at home, so im really liking this, its kind of like running debian now instead of ubuntu or mint, getting rid of all the junk that gets piled on top of the pure OS!
im sure i will try other ROMs as well and maybe other kernels. do those install the same way? using ROM Manager?
dodgefan67 said:
im liking it so far, and yeah i understand about root access, i've done linux admin and use debian at home, so im really liking this, its kind of like running debian now instead of ubuntu or mint, getting rid of all the junk that gets piled on top of the pure OS!
im sure i will try other ROMs as well and maybe other kernels. do those install the same way? using ROM Manager?
Click to expand...
Click to collapse
Yea you flash it in recovery.
Sent from my LG-P999 using XDA App
now that yore rooted and have clockwork you can flash things safely
just remember to backup, and to wipe the davik cache its in advanced menu.
try weapon r and then add the update new clip to it , its smooth and no bugs so far fro me.

[SOLVED]How to manually push efs backup

Ok so I got a little flash happy today and during the course of it I messed up my IMEI to all symbols. I went and reflashed everything about 10 times and tried to restore my efs backup from my card.
I guess that my efs backup became messed up because none of the times has it fixed my IMEI like it has in the past. I have another efs backup on the sd card and I remember reading somewhere that I can manually push the files.
I just cannot figure out what to push to restore the IMEI back to normal. I have pushed the EFS backup tar and got data back but with my IMEI still all symbols.
Can anyone tell me what files to push? I would greatly appreciate it
Have you flashed the efs_restore zip? I think there is a method posted in FB's unlocker thread.
Yes I have tried flashing the efs_restore zip so many times. I have no idea what happened on why it is not working. I have tried every MTD rom to date and I have always used the restore without an issue.... until today, when everything just stopped working. I do not get any errors during the restore zip and it appears it works until I boot my phone and check my IMEI
Maybe you just need to go back to kj6 via heimdall.
If you have a backup if your efs (the efs folder itself) you can just copy to the root directory and overwrite the corrupted one then reboot. It's the easiest way to fix it if you have a copy if the folder
Sent from my SGH-T959V using XDA
You didn't try going back to stock yet? Tisk tisk. Do that. Check that your signal/IMEI works on a stock rom, then flash AOKP from that, then flash CM9 or MIUIv4 after that. AOKP has the updater.sh fix that allows you to flash directly from BML so do that first.
Lol I was going to but I was at work when it happened. Thats what i did when i got home. I knew I could go back to stock but I knew I had read a way to do it without going back so I really was more curious that I could not figure it out. Going back was really painless and fixed the issue.
I was more looking for the info posted above on how to do so manually. Thanks for the info... now I know for the future ha. I will give out thanks and add solved to thread title when I get to a computer. Thanks everyone
Sent from my SGH-T959V using xda app-developers app
jigglynuts said:
Lol I was going to but I was at work when it happened. Thats what i did when i got home. I knew I could go back to stock but I knew I had read a way to do it without going back so I really was more curious that I could not figure it out. Going back was really painless and fixed the issue.
I was more looking for the info posted above on how to do so manually. Thanks for the info... now I know for the future ha. I will give out thanks and add solved to thread title when I get to a computer. Thanks everyone
Hi I had the same issue before and what I did was manually push the efs folder from my sd and then powered off my device. Then I took the battery out and held the power bottom with battery out for 10 sec to drain remaining charge on the motherboard. Then popped the battery back in powered it up and walaaa my imei came back try it won't hurt :thumbup:
Sent from my SGH-T959V using xda premium
Click to expand...
Click to collapse

No signal: Replaced Sim Twice (correct forum)

Current modem i'm on.
CWM-UXKG3-Modem.zip
Current build i'm on,
SHG-i997
4.1.1
i997UCLB3
Paranoid Android 1.992
pa_infuse4g-userdebug 4.1.1 KR003L
eng.scott 20120825.131058 test-keys
I have a rogers sim card, and I cannot connect to any of them. I've had rogers swap out the cards, re initialize the account, etc.
I put in a BELL card, and presto chango it works instantly...
But I put in the rogers, that works on a sony xperia X1... and the phone (galaxy infuse4g) can't handle it... just can't find networks for sh...
Help please, Work phone... need it up and running asap
- rmleloup
Maybe apn settings?
Sent from my SGH-I997 using xda app-developers app
csandman1977 said:
Maybe apn settings?
Sent from my SGH-I997 using xda app-developers app
Click to expand...
Click to collapse
That would make sense, except i've put it in, and now it's empty... Dunno how, I want a complete factory reset, as it won't take with this new sim card in the way... might have to call rogers and switch back to the previous replacemennt... fffff....
What are the default apn's that are reliable for rogers? So I can have em ready to manually enter them for the 10th time... no joke..
- rmleloup
I think the apn settings are in the infuse super everything thread. Check the android development stickies. For some reason when I try to look at that thread xda force closes.
And did you try going back to stock to see if the sim card would work?
Sent from my SGH-I997 using xda app-developers app
After you entered APN, did you hit menu select save and then reboot?
csandman1977 said:
I think the apn settings are in the infuse super everything thread. Check the android development stickies. For some reason when I try to look at that thread xda force closes.
And did you try going back to stock to see if the sim card would work?
Sent from my SGH-I997 using xda app-developers app
Click to expand...
Click to collapse
I have tried going to stock, just literally... trying apok variant now, nice install features. But anyhoo, testing literal now... Will look for those apn's and re enter...oi
Update: atnt apn only...
http://forum.xda-developers.com/showthread.php?t=1791526
Needing Rogers... I don't want to "roam" on my own network
adfurgerson said:
After you entered APN, did you hit menu select save and then reboot?
Click to expand...
Click to collapse
I hit save, but not reboot. They didn't stay...
http://forum.xda-developers.com/showpost.php?p=24694720&postcount=7 APN for Rogers
Also did you lose your imei when you went to JB?
other than apn maybe not working for rogers, jb does a big conversion of the file system and occasionally phones lose the imei or baseband in th process. check them in settings>about phone. if they are null or corrupt you may need to flash a modem or restore the /efs partition. check the paranoid or cm10 q/a threads for details.
adfurgerson said:
http://forum.xda-developers.com/showpost.php?p=24694720&postcount=7 APN for Rogers
Also did you lose your imei when you went to JB?
Click to expand...
Click to collapse
It looks like I have... Suggestions?
Dani897 said:
other than apn maybe not working for rogers, jb does a big conversion of the file system and occasionally phones lose the imei or baseband in th process. check them in settings>about phone. if they are null or corrupt you may need to flash a modem or restore the /efs partition. check the paranoid or cm10 q/a threads for details.
Click to expand...
Click to collapse
What is a fool proof method, I can boot to cwm, I have tried flashing modems. But how could I restore the efs? And from what? As i'm unsure how to do this, I am new to repair... I would really appreciate walkthroughs, etc. even hold my hand...?
Rewards = Pick a game server, give me specs, and my pc can host.
50mbps down, 3mbps up, i7 @ 3.5ghz, 12gb ddr3, win7 ulti 64bit. I'm willing to fair trade help for fun.
- rmleloup
Read into paranoids reference to imei... I didn't backup... missed that...serious noob mistake... please help... I can read my sticker imei... how do I "install" it....
*** Edit ***
I found this,
http://mobilecon.info/restore-imei.html
---
Could someone translate this to english, ie lamen terminology that makes sense? I don't mind re wiping the device so I can make a efs backup etc, and re image the device. Hell if this takes me 3-4hrs i'm ok... I just want to get this done properly...
rmleloup said:
It looks like I have... Suggestions?
What is a fool proof method, I can boot to cwm, I have tried flashing modems. But how could I restore the efs? And from what? As i'm unsure how to do this, I am new to repair... I would really appreciate walkthroughs, etc. even hold my hand...?
Rewards = Pick a game server, give me specs, and my pc can host.
50mbps down, 3mbps up, i7 @ 3.5ghz, 12gb ddr3, win7 ulti 64bit. I'm willing to fair trade help for fun.
- rmleloup
Read into paranoids reference to imei... I didn't backup... missed that...serious noob mistake... please help... I can read my sticker imei... how do I "install" it....
Click to expand...
Click to collapse
it gets backed up during the install. (also the original is still intact it's just not mountable) look in the sdcard and see if there is a folder called backup with a subfolder efs. if so move the contents of /sdcard/backup/efs into /efs
if the backup itself is corrupt you can flash to stock with the pit file and repartition in odin or heimdall. i think there is a full rogers dump on here but you can use an att dump, only thing is you will lose the rogers boot screen forever if you use an att dump, unless someone finds the rogers param.lfs or makes a custom one. then flash a cwm kernel on it and make your own backup, i'd explain that but i forgot the block device and mount point for that. but i think qkster has a package for that so no worries, it should be in the cm10 thread. then upgrade to ics and then jellybean again. (ics first for cwm 6 untill a gb samsung kernel is developed with cwm 6.0, or the mtd conversion might not work) if you're lucky the efs restore will work this time, if not you will have to restore from your backup or the default backup.
if i would give better detail but i'm not exactly sure of it all right now because im already on cm10 so i can't see the orriginal rfs /efs folder and i'm not sure how qksters scripts save the /efs. but if you struggle with it pm me and ill give you my gmail/google talk and help work through it.
You could backup with infuse toolkit which makes a file you use in Odin to restore. There is a link to toolkit in cm10 op. This thread tells how to restore that file.
http://forum.xda-developers.com/showthread.php?t=1858842&highlight=restore+efs
Dani897 said:
it gets backed up during the install. (also the original is still intact it's just not mountable) look in the sdcard and see if there is a folder called backup with a subfolder efs. if so move the contents of /sdcard/backup/efs into /efs
if the backup itself is corrupt you can flash to stock with the pit file and repartition in odin or heimdall. i think there is a full rogers dump on here but you can use an att dump, only thing is you will lose the rogers boot screen forever if you use an att dump, unless someone finds the rogers param.lfs or makes a custom one. then flash a cwm kernel on it and make your own backup, i'd explain that but i forgot the block device and mount point for that. but i think qkster has a package for that so no worries, it should be in the cm10 thread. then upgrade to ics and then jellybean again. (ics first for cwm 6 untill a gb samsung kernel is developed with cwm 6.0, or the mtd conversion might not work) if you're lucky the efs restore will work this time, if not you will have to restore from your backup or the default backup.
if i would give better detail but i'm not exactly sure of it all right now because im already on cm10 so i can't see the orriginal rfs /efs folder and i'm not sure how qksters scripts save the /efs. but if you struggle with it pm me and ill give you my gmail/google talk and help work through it.
Click to expand...
Click to collapse
I'll pm you my google talk user. Just have to install it
Ty so much.
I've also installed es file explorer, which has a remote ftp feature. So i'm going to be trying to access that. (Root enabled, browse everything). Hoping I can access it effectively also...
- rmleloup
So, after multitude of re bricking... yes... heimdall, odin, rom manager, etc... going through red, green, blue, rainbow, and off blue cwm's, etc... I'm finally on dark knight 4.0.4, with a functional miui... It's alive, it works, now installing mass apps, oc'd, and awesome... Test calls function clean, bt is perfect (for phone purposes).
And top it off, celebrating with dean martin... and league of legends shortly.. and a keith's beer.
Thank you all, this forum is AMAZING.
- rmleloup
That's amore!

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