Database Info

Unable to Boot error, but device works!

Greetings people!
Yesterday I got this message while booting up my TP (latest official ROM):
"The device is unable to boot because either you have turned off the device incorrectly or tried to install an application from untrusted source. Press END to reset your device or press any other button to cancel. This operation will delete all your personal data and restore the device to its factory default settings"
However apart from that message, phone works flawlessly without any noticable change in speed or stability! The only apparent problem is that it takes a while longer (about 10 seconds) to boot up because of that message. I tried a couple of backups, problem was solved at first, but returned later...
I do take daily backups, but since I hardly monitor my phone when I reset it, this problem could have been caused by an app or reg entry a while ago... and searching for the appropriate backup will be a pain in the ass.
Since there's no change in speed or stability, do you think it would be wise to keep using the phone as is, or is it possible this would cause further problems down the road?
Any other way to troubleshoot it (at least to find the program that's causing this) other than a hard reset?
Edit: couldn't wait so I reverted to a week-old backup, installed back most of my applications, and it seems to be fixed (for now)

Update! I just tried a new SD to try XDAndroid, and guess what, the error disappeared!
So there must be a program I had installed in the storage card, possibly trying to start a service or something on every reset... and failing.
Is there a way to troubleshoot this? Maybe through SKTools or anything similar? I have a ton of apps installed into storage card and it will be a pain in the back cover to try by trial-and-error.
Thank you in advance
edit: inserted my old storage card again, error did not appear, problem solved! At least for now
Still if anyone knows how to troubleshoot this, please let me know

Update: Seems this error occurs every time I use SPB backup.
Yesterday, after a scheduled backup, the error came back. To troubleshoot this, I removed the SD card, did a soft reset, the error was gone! I took another manual backup, and again, the error came back.
So there must be something happening with SPB Backup and my SD card. Probably messing with files on the SD, or the driver or whatever (no idea there, I'm a total noob when it comes to software).
Moved the issue to the SPB forum

I have this message to, but I have never used SPB Backup

Well, in my case, it was obviously something tampering with the SD card (even if not SPB backup, something else)
Have you tried rebooting your phone with the SD card taken off? I just wait till it boots normally, and then insert it back. Works for me every time.
If that still happens, that probably means whatever is causing the problem is in your main memory.

akpidis said:
Well, in my case, it was obviously something tampering with the SD card (even if not SPB backup, something else)
Have you tried rebooting your phone with the SD card taken off? I just wait till it boots normally, and then insert it back. Works for me every time.
If that still happens, that probably means whatever is causing the problem is in your main memory.
Click to expand...
Click to collapse
Well I tried that just to see what would happen and I did not get the error message. So it is something on the SD card, but booting without it is not an option for me as I have several boot-start apps that are housed on it.

Perhaps one of those apps is broken?
As far as my case goes, I kept on using it for three months after the error appeared, without noticing any lag or issues at all. The only downside was that it took me three minutes to boot up, something I got used to.
If that's no big deal for you, I'd suggest you just leave it as it is for now, and check for lagging or specific applications failing (maybe one of them will be the app that's causing the problem?). If nothing happens down the road I think it could be safe to leave it as it is.
Now, if you can't stand this, I guess the only practical solution would be a hard reset. You can always play around with removing/reinstalling those apps you mention (or even better, installing them in the phone's memory) to check if and which one is broken, but I can understand that this not only will be a huge burden, but you may come to the conclusion that no specific app is causing this and something went south in the OS.
Personally the only apps which include a boot-up service I have installed into my SD are Football Monitor and PocketWeather. I tried removing both of them them back when I first had that issue, it didn't work...
Sorry I couldn't help more :/

wifi problems laggy, crashing

hi all.
As I mentioned in my other post I have been having some serious wifi problems. Basically if I leave the wifi off the phone seems to work fine. When I turn it on however, the phone becomes laggy and it does not work. After turning the wifi on from the settings page, it says it is scanning for networks. After 20-30 seconds a little bubble pops up and says "unable to scan for networks" it will continue to try and scan on and off but never is successful. The phone is better to start up with the wifi off because if on, the phone becomes almost unresponsive and I am assuming it is because it is trying to scan in the background.
I just rebooted into the recovery menu and wiped the cache and device, but no luck. Any other ideas as to why this is happening?

Little update:
I found a few other threads where people complained about the same problem. Their recommended fix involved removing the file "/data/wifi/bcm_supp.conf"
The full thread is here: http://androidforums.com/samsung-moment/46179-unable-scan-networks.html
I tried that and also did a factory reset but unfortunately have not been able to fix the problem. Does anyone else have any other ideas?

hi Scales11
I'm also having the same problem..
did the
1. factory reset
2. new ROMs - Darky 7.01, Cognition 2.3...
3. delete the /data/wifi/bcm_supp.conf file
and still no luck... and realised bluetooth isn't working either..
anyone?? please help?

If you have flashed other ROMs and still the same issue. I would say its a hardware issue.

my fix
Geekboy9:
I meddled it for hours and while others have found various odd reset/rom fixes, I concluded that it was a hardware issue which cannot be fixed.
I flashed it back to a stock rom and went to att. They agreed that it didnt have any water damage and gave me a number to call about getting a replacement. Since the phone was less than a year old and its failure was not due to my use, the replaced it with a refurb. All in all the refurb seems fine, even after I rooted and flashed the cognition rom. I would recommend you do the same.

[Q] Can't access SD apps after reseting DS!

Hi! My Desire S was crashing frequently so I did factory reset to my Desire S. Before that I moved some of the apps to SD.
The problem is that after resetting the phone, I am unable to find the apps on SD. There is no icon of them in the menu. But my card memory is still the same as before reset meaning that they were not uninstalled by resetting.
What should I do? Any recommendations and ideas?
Thnx!

Mohib86 said:
Hi! My Desire S was crashing frequently so I did factory reset to my Desire S. Before that I moved some of the apps to SD.
The problem is that after resetting the phone, I am unable to find the apps on SD. There is no icon of them in the menu. But my card memory is still the same as before reset meaning that they were not uninstalled by resetting.
What should I do? Any recommendations and ideas?
Thnx!
Click to expand...
Click to collapse
"Factory Reset" resets the phone to the factory default (or the ROM default if you're using a custom ROM). That means it starts up as if it was a fresh install. However, it cannot touch anything on the SD-Card unless to tick the box for "Format SD-Card" (or whatever it's called).
Simply reinstall the applications and move them to SD again as you did before.
One lesson to learn though - just because your phone is crashing, doesn't always mean that a factory reset is the best plan of action. If it is 'Stock', unrooted etc then fine, but as you are on XDA I assume you actually play with it a bit; you would have been better off taking logcats and trying to work out what was causing the crashes rather than simply wiping and having to install everything from scratch again. It could even be something as simple as your SD-Card going faulty, thus causing the phone problems when it tries running the apps that you have moved to SD.

SimonTS said:
"Factory Reset" resets the phone to the factory default (or the ROM default if you're using a custom ROM). That means it starts up as if it was a fresh install. However, it cannot touch anything on the SD-Card unless to tick the box for "Format SD-Card" (or whatever it's called).
Simply reinstall the applications and move them to SD again as you did before.
One lesson to learn though - just because your phone is crashing, doesn't always mean that a factory reset is the best plan of action. If it is 'Stock', unrooted etc then fine, but as you are on XDA I assume you actually play with it a bit; you would have been better off taking logcats and trying to work out what was causing the crashes rather than simply wiping and having to install everything from scratch again. It could even be something as simple as your SD-Card going faulty, thus causing the phone problems when it tries running the apps that you have moved to SD.
Click to expand...
Click to collapse
Hi! Thanks for your detailed reply. No doubt I am on XDA, but my DS is still "Virgin" ! It is on stock ROM Gingerbread. I am still a newbie in the filed of ROMs that's why I haven't rooted my DS yet.
Actually, what happened was that whenever I unlocked the phone, some .com service stopped working and my phone dropped all the network signal. There was some issue with the radios I think. WiFi signals also got very feeble.
I by moving apps to SD doesn't it mean that I will not be required to re-install then after resetting? I mean they were not deleted or erased? Or by moving to SD means that there data is moved but there apk is still on phone?
Regards,

Mohib86 said:
Hi! Thanks for your detailed reply. No doubt I am on XDA, but my DS is still "Virgin" ! It is on stock ROM Gingerbread. I am still a newbie in the filed of ROMs that's why I haven't rooted my DS yet.
Actually, what happened was that whenever I unlocked the phone, some .com service stopped working and my phone dropped all the network signal. There was some issue with the radios I think. WiFi signals also got very feeble.
I by moving apps to SD doesn't it mean that I will not be required to re-install then after resetting? I mean they were not deleted or erased? Or by moving to SD means that there data is moved but there apk is still on phone?
Regards,
Click to expand...
Click to collapse
Although the data may still be on the SD-Card, the phone O/S will have no knowledge of them, or of what to do with them. It would be useful if you could remember which '.com' stopped, but it's too late now. I doubt if it was actually a radio problem though - if it has been working fine since you got it then it is unlikely that the radio firmware suddenly decided to go wrong.
It may be worth keeping an eye on it as you reinstall all your apps. If it is still under warranty then it may be worth taking it back to the shop you got it from just in-case there is a developing hardware fault, although that is unlikely.

[Q] Über-crash = reformat? What to do? thx

Hey gang -
Yesterday at home I pulled my phone out of my pocket and it was at the "touch the Android to begin" (!) screen. But it was still connected to my WiFi... And I was confused.
Rather than do that, I reset the phone, wiped Davlik cache and Fixed Permissions (took a long time!), then rebooted.
That sort of worked, but a LOT of my apps are crashing on start, and others are missing altogether. Even when I re-download them and re-install them, they don't work.
What's the way-ahead here? Am I stuck doing a factory reset? Or even formatting the SD card?
Thanks in advance.

When things get that fouled up, a clean install over a freshly formatted microSD is probably the best thing to do. You might be able to get away with restoring from a "nandroid" backup from before things started going bad, but "Your mileage may vary."

jeffsf said:
When things get that fouled up, a clean install over a freshly formatted microSD is probably the best thing to do. You might be able to get away with restoring from a "nandroid" backup from before things started going bad, but "Your mileage may vary."
Click to expand...
Click to collapse
Okay, thanks!
Anything else on the SD card I should back up besides DCIM / Media-> Ringtones/MP3s / "ui" / TitaniumBackup?
(Got about an hour while this stuff goes off to my HD...)

Hoo! Thought I effed myself for a sec - from CWM I was wiping all partitions... including /sdcard.
Then I realized... $#¡+... my ROM is on there!
Fortunately CWM has the "mount USB storage" option.
*whew!*

I was going to add format the sdcard from the phone. But you did that. Typically when what happened to you would happen to me it would be from some app updating and for whatever reason got corrupted during install and fouled the phone up. If you use TiB I highly suggest setting a automated task to back up your TiB backups to drop box, google drive or box.net. Then in these situations you have a recent TiB to fall back on.

JaimeZX said:
Hey gang -
Yesterday at home I pulled my phone out of my pocket and it was at the "touch the Android to begin" (!) screen. But it was still connected to my WiFi... And I was confused.[...]...a LOT of my apps are crashing on start, and others are missing altogether. Even when I re-download them and re-install them, they don't work.
Click to expand...
Click to collapse
Hi JaimeZX,
I am curious if you have recently rooted, flashed to stock, or installed the VB or Basic w/a twist kernel? I am running the exact same setup as you list (minus the modem) and this *exact* same scenario happened to me on the exact same day. March 12th, at about 10pm.
Detail as much information as you can, I've had many problems since flashing back to stock, formatting the SD, wiping everything multiple times, and re-installing Valhalla Black, Basic w/a Twist and all fresh apps d/l'd from the market. I'm on multiple attempts to stabilize the device and have questioned whether or not there is some issue with either the Rom or the Kernel. Perhaps there is an issue with the stock packages, or the USB driver ghosts (I've deleted all USB assigns at all ports and reinstalled for device detection in Heimdall). Hopefully we can get a good list of information to help us fix an issue that is apparently quite catastrophic (in that /data seems to corrupt) and save others from a future headache.
I have searched the dev threads to no avail, and as a general rule it seems that if problems are brought up they are usually met with "try flashing back to stock," "gremlins," "no one else is having problem 'X'," etc. even in cases of users with multiple complaints of the same issue. Both the DSP Sound force close upon EQ preset select and the issue that some had with the Messages, Phone Dialer, Search, Call Logs closing to homescreen are issues that I've seen this with. I believe this is a real issue, and I need to get it fixed without wasting time on messaging replies to anyone advising "try this," "Try that," etc.
My hope is that between the two of us we can address any of the common responses from developers before taking the issue to them and reporting it. I personally cannot today get my phone to boot without freezing (after boot cycle completes - not bootlooping or freezing during the bootleader seq) and am currently attempting to get into d'l mode without much luck.
When this happened to me on Tuesday night I was able to reboot to recovery, reflash the final-fixed.zip first without wiping data (which failed-/data is corrupted somehow here) and then *with* wipe/data and it booted, ran fine, so I then re-flashed BasicWithaTwist Kernel and was fine until late last night again.
I had been using the phone for some fairly constant web searching and the screen went black, appeared to soft reboot, and then froze. I pulled the battery, waited a few mins, reinstalled battery, once again, Freeze after boot.
No indication that an app crashes, phone just completely freezes, remains screen on, capkeys lit, power button does not respond, nor do softkeys or touchscreen. Makes it though the scan device and scan SD processes *sometimes* and other times freezes before it completes them.
I pulled the both the SD and the SIM and booted up, same issue, though it makes it through the scan device processes everytime since it's not scanning 18gb of data on an SD. This tells me it is not SD or SIM related, and is most likely software related, either ROM or Kernel. I've also ruled out the possibility of an old app/data package by reformatting the SD (long format - wipe all containers to "o,") let Android rebuild menu structure on SD, redownloaded a short list of commonly used apps and installed fresh - *NO* TiBackup apps were restored and the actual backup folder was not replaced to the SD after flashing.
I've tried both the Odin (Fb KJ6 back to stock) and the one click (lumin's tutorial) back to stock. Checked the download of Final-Fixed, MD5 checksum is correct. Cannot find MD5 on the sms-T959V-KJ6-antsvx.v1.1.3.zip file. Doesn't seem to be listed on Anton's github site, perhaps I don't know how to find it there. That is the only puzzle piece I haven't double checked.
All for now, looking forward to yours or anyone's replies or suggestions for anything I may be overlooking. Thanks.
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---------- Post added at 11:19 AM ---------- Previous post was at 11:12 AM ----------
devlinandersen said:
Hi JaimeZX,
... I've had many problems since flashing back to stock, formatting the SD, wiping everything multiple times, and re-installing Valhalla Black, Basic w/a Twist and all fresh apps d/l'd from the market. I'm on multiple attempts to stabilize the device and have questioned whether or not there is some issue with either the Rom or the Kernel....
0
Click to expand...
Click to collapse
I should add that I have been on Valhalla Black Edition since it was in beta and have been quite happy with it. I only did a back to stock flash to try to (one more time) see if I could get a cooperative DSP sound manager. No such luck, and now a few headaches, and this issue on Tuesday coupled with yours in the exact same timeframe...I'm just thinking there is a problem somewhere in the chain of attack and hope to find it with the help of others.
Also, phone freezes after boot, needless to say, I'm not able to run a logcat.

devlinandersen said:
No indication that an app crashes
[...]
Also, phone freezes after boot, needless to say, I'm not able to run a logcat.
Click to expand...
Click to collapse
Try running logcat > /sdcard/some_file and cat /proc/kmsg > /sdcard/some_other_file so you have a capture of both the Android logs as well as the kernel logs. If you're not comfortable with command-line work, aLogrec should be able to at least help with the Android logs.
Given the number of people successfully running stock and custom ROMs on this device with stability, it either is going to be a hardware problem with your phone, corruption of a file system, or some app or combination of apps you are running, not a "dev" issue. Without logs, it is going to be nearly impossible to differentiate between the causes.

jeffsf said:
Try running logcat > /sdcard/some_file and cat /proc/kmsg > /sdcard/some_other_file so you have a capture of both the Android logs as well as the kernel logs. If you're not comfortable with command-line work, aLogrec should be able to at least help with the Android logs.
Click to expand...
Click to collapse
I will try in a bit, collecting files for another fresh install, different ROM.
jeffsf said:
Given the number of people successfully running stock and custom ROMs on this device with stability, it either is going to be a hardware problem with your phone, corruption of a file system, or some app or combination of apps you are running, not a "dev" issue. Without logs, it is going to be nearly impossible to differentiate between the causes.
Click to expand...
Click to collapse
This is false logic and is just what I was trying to avoid. I will attempt to explain to hopefully help build a stronger environment that is conducive to problem solving. It still very well could be a dev issue if say, a certain ROM or Kernel begins to wrestle with an app that has recently updated. Is it the apps or the rom's fault? Maybe it is a seldom used feature of an app that just missed all the users testing until now, it's well within the realm of possibilities and would just like to see helpful comments (such as the first portion directly above) to help solve issues. Truth is, I don't know *what* is wrong and neither do you, so a focus on constructive commentary would just help everyone out.

Logs or it didn't happen.

Update...
After a factory reset/data wipe, wipe cache, wipe dalvik cache I had to let the battery charge for a bit. Came back and decided to just try to boot phone, still freezes after boot sequence. I decide that I will flash a different kernel and a different ROM in order to see if I can make a difference. Before flashing Blastoff v2.5 Kernel I decided to factory wipe/data wipe, wipe cache and dalvik again...I am not sure if this is news, but when doing the Dalvik cache wipe in CWM it returned no result, perhaps because I had previously performed and is empty, but I thought it strange that there was *no* communication that it was already empty/wiped, etc.
Installed Blastoff v2.5 and was able to boot without freezing. Something else was damaged with the Rom as well, would not load home screen, only had pulldown menu. Rebooted to Recovery and flashed Unnamed RC-2.zip and have been charging the battery, talking on the phone and reinstalling apps from market.
Same error happened twice to me and once with Jaime. Both of us on VB and Basic+Twist. After installing new kernel i'd point towards kernel. Also uninstalled DSP and installed voodoo sound on VB, but had that on previous version as well. If I had to start somewhere, I'd start right around there.
Hope this helps, will provide logs from SD backup I made before reflash of new kernel/rom. Gotta run. Adios...
-devil.

I had to get my phone going today, it appears to be working without freezing, though on this new app the phone dialer/phone caller force closes on outgoing calls (I am only mentioning here, I will visit the Q&A for the ROM if I need assistance). Unfortunately I was unable to replicate the problem without flashing back to my previous nandroid. I have it saved and given some time I will do my due diligence and get a logcat **if** Jaime doesn't do it before me...because I kinda have a feeling that something was updated in the market on Tuesday evening that is now fighting with the kernel somehow. But again...I didn't run a logcat so it's not even happening...yet...
...to be continued...

Devlin - sorry for the delayed reply.
I did notice that I'd had more and more apps FCing on me in the week leading up to the Über-crash. Unfortunately I don't have any more "background" to add than that.
I backed up everything I wanted on the SD card and then formatted that, plus /data, /system /everythingelsethatwasanoptioninCWM. Then did my installs.
FORTUNATELY (knock on wood) I have not had any recurrence of the major issue.

Wifi / Bluetooth / Sim Card Issues Since Last Two OTA Updates

I received an OTA Update in early to mid May. I am now forgetting which version I received at that time. ( I forget as I have done so many downgrades/upgrades/factory resets in my troubleshooting the last month!) Up until these issues, I've never rooted or flashed a ROM, or unlocked boot loader or anything. My N5 had always been completely stock.
First Issue
It all started with just the sim card. I get "no sim card" message, even though it was in there. This was my original SIM card and I had never ejected it since I bought it new. I found I could turn it off, pop it out and back in, and boot it again. Sometimes it will see the sim card again. It may take 20 times, but finally work.
I naturally got a new sim card, as well as confirmed said sim cards worked in other phones. My wifi and bluetooth were working fine at first. Working with google support, they recommended a factory reset to fix the sim card issue. Immediately after the factory reset, my bluetooth would no longer turn on nor show a MAC address. At this point, my wifi was fine.
Second Issue
In addition to the sim card slot issue, now my Bluetooth no longer works! Around this time, I received another OTA update, this time it was 5.1.1 LMY48B. I had hoped it would fix the issues, but no dice! I start reading up on the XDA forums as I am determined to start rolling back to see if this will fix anything. I unlocked the boot loaded, rooted, etc following the threads on XDA
Third Issue
I do all sorts of flashing to hammerhead-krt16m_4.4 to hammerhead-ktu84p_4.4.4 to hammerhead-lrx21o_5.0 to hammerhead-lmy48b_5.1.1 . On the final flash back to 5.1.1 my wifi now no longer works!!!!!!!!!!! It is stuck at wifi turning on and no MAC address shows. It also seems my cell data is very very slow now!
After many calls to google, I think I finally succeeded in getting a “ticket routed up”. My phone is from the play store around 10/31/2013. They keep pushing I am out of warranty. I attempt to ask for a refurb N5 without luck so far. I am not very confident anything will come from google. This being my only handset now, it is just not an option to send this to LG. My current state is my voice/txt and cell data are working. Data seems a little slow but usable. Wifi and bluetooth won't turn on. I also still have the sim car slot issue upon rebooting. After a bunch of reboots it will eventually see sim card.
What else can I try? Is there a better way to attempt to repair/reload my radio drivers? Perhaps there is corruption of sorts? I have not tried a custom ROM or radio or kernel…… I did take to a local tech. They looked at everything literally under a microscope and did not see any issues that way. I am in the USA and have a lgd820. Although we are quick to assume a hardware issue, I am wondering if there is some sort of incompatibility with the first run of N5 and lollipop….. who knows!
I’ve read all sorts of threads on the internet. It seems I am not the only one. We are very quick to assume it must be a bad motherboard, it just seems too coincidental to me!
Here is a collection of threads……
Within the N5 Sub
http://www.reddit.com/r/Nexus5/comments/2g0i3m/no_wifi_or_bluetooth/
http://www.reddit.com/r/Nexus5/comments/253y8d/my_nexus_wont_activate_wifi_and_bluetooth/
http://www.reddit.com/r/Nexus5/comments/2pur0v/wifi_stuck_on_turning_on_mac_and_ip_addresses/
http://www.reddit.com/r/Nexus5/comments/361ecw/help_wifi_and_bluetooth_stopped_working/
http://www.reddit.com/r/Nexus5/comments/2h4co7/wifi_wont_turn_on/
http://www.reddit.com/r/Nexus5/comments/2hpj2w/can_no_longer_connect_to_wifi_stuck_at_wifi/
http://www.reddit.com/r/Nexus5/comments/2wjk38/wifibluetooth_issues/
http://www.reddit.com/r/Nexus5/comments/2zboet/no_wifi_no_bluetooth_and_reboots_whenever_i_press/
Other Links
http://forum.xda-developers.com/google-nexus-5/help/wifi-stuck-t2721643
http://forum.xda-developers.com/google-nexus-5/help/bluetooth-t2733672
https://productforums.google.com/forum/#!topic/nexus/IJSOuc7gw0w;context-place=forum/nexus
https://productforums.google.com/fo...otification#!category-topic/nexus/1H6ZiIMYrtw
https://productforums.google.com/forum/#!topic/nexus/ke-OEPLbRSQ
https://productforums.google.com/fo...xus/lollipop|sort:relevance/nexus/NbO-AGvRCLk
http://code.google.com/p/android/issues/detail?id=80028
I found this, but not really sure it’s the same thing….. http://forum.xda-developers.com/showpost.php?p=52441901&postcount=47

Prodeje79 said:
I found this, but not really sure it’s the same thing….. http://forum.xda-developers.com/showpost.php?p=52441901&postcount=47
Click to expand...
Click to collapse
Hi,
This link was actually what i was going to suggest. It seems you've tried pretty much everything in the book except that.
I think its worth a try. Same as any other learning process, take your time and read the whole thing once or twice until you feel comfortable with the process. Then go for it.

Darn it, I should have downloaded those programs BEFORE rooting my phone again. Now I a struggloing to get my SIM card detected again to get data to DL them! whooops!
How would I go about attempting to read my files first to see if they are accessible and potentially write down my old MACs first?
EDIT: I found this but not sure how to get that working? I have Windows 7 and CMD prompt at this point. what program is that using?
https://www.reddit.com/r/Nexus5/comments/2j6vao/how_to_changefix_your_wifi_mac_address/
beekay201 said:
Hi,
This link was actually what i was going to suggest. It seems you've tried pretty much everything in the book except that.
I think its worth a try. Same as any other learning process, take your time and read the whole thing once or twice until you feel comfortable with the process. Then go for it.
Click to expand...
Click to collapse

OK, I went through those steps. everything appeared to go through correctly. Still no wifi nor bluetooth
EDIT: I rebooted a second time. WHen it first boot up, wifi was on and connected to my works AP. I quickly went in and snagged a screen shot of MAC address. Oddly enough, it did not match what I had input via hex editor. Within a few moments the wifi stopped working. It is back to the turning wifi on issue..... bluetooth still not working as well.
Very interesting.....
EDIT2: I get access denied when attempting to read either files within their corresponding folders under persist.
I was able to copy my stock files into my sdcard download folder and read them there without issue. Thus seeing my default addresses for both!
Perhaps it is normal, but I am never able to edit the old or new files under persist. I basically renamed original folders to bluetoothold and wifiold. I could delete them perhaps.
Note that I put my phone into airplane mode before doing anything noted in the steps.

Any other ideas? Given that it is showing my original MAC address the one time it worked, this makes me think that it is not reading the files .macaddr at all

I have the same problem. Funny thing is, the phone is just over 2 years old and the motherboard was replaced just 9 months ago (so, brand new one).
In my case, I received and Android update 2 days before I found the phone burning hot and restarting on it's own. Then the same chain of events you describe started to unleash. Now I can't be sure if this is software related, hardware related or both.
Can't seem to find a solution to the issue either.

Prodeje79 said:
I received an OTA Update in early to mid May. I am now forgetting which version I received at that time. ( I forget as I have done so many downgrades/upgrades/factory resets in my troubleshooting the last month!) Up until these issues, I've never rooted or flashed a ROM, or unlocked boot loader or anything. My N5 had always been completely stock.
First Issue
It all started with just the sim card. I get "no sim card" message, even though it was in there. This was my original SIM card and I had never ejected it since I bought it new. I found I could turn it off, pop it out and back in, and boot it again. Sometimes it will see the sim card again. It may take 20 times, but finally work.
I naturally got a new sim card, as well as confirmed said sim cards worked in other phones. My wifi and bluetooth were working fine at first. Working with google support, they recommended a factory reset to fix the sim card issue. Immediately after the factory reset, my bluetooth would no longer turn on nor show a MAC address. At this point, my wifi was fine.
Second Issue
In addition to the sim card slot issue, now my Bluetooth no longer works! Around this time, I received another OTA update, this time it was 5.1.1 LMY48B. I had hoped it would fix the issues, but no dice! I start reading up on the XDA forums as I am determined to start rolling back to see if this will fix anything. I unlocked the boot loaded, rooted, etc following the threads on XDA
Third Issue
I do all sorts of flashing to hammerhead-krt16m_4.4 to hammerhead-ktu84p_4.4.4 to hammerhead-lrx21o_5.0 to hammerhead-lmy48b_5.1.1 . On the final flash back to 5.1.1 my wifi now no longer works!!!!!!!!!!! It is stuck at wifi turning on and no MAC address shows. It also seems my cell data is very very slow now!
After many calls to google, I think I finally succeeded in getting a “ticket routed up”. My phone is from the play store around 10/31/2013. They keep pushing I am out of warranty. I attempt to ask for a refurb N5 without luck so far. I am not very confident anything will come from google. This being my only handset now, it is just not an option to send this to LG. My current state is my voice/txt and cell data are working. Data seems a little slow but usable. Wifi and bluetooth won't turn on. I also still have the sim car slot issue upon rebooting. After a bunch of reboots it will eventually see sim card.
What else can I try? Is there a better way to attempt to repair/reload my radio drivers? Perhaps there is corruption of sorts? I have not tried a custom ROM or radio or kernel…… I did take to a local tech. They looked at everything literally under a microscope and did not see any issues that way. I am in the USA and have a lgd820. Although we are quick to assume a hardware issue, I am wondering if there is some sort of incompatibility with the first run of N5 and lollipop….. who knows!
I’ve read all sorts of threads on the internet. It seems I am not the only one. We are very quick to assume it must be a bad motherboard, it just seems too coincidental to me!
Here is a collection of threads……
Within the N5 Sub
http://www.reddit.com/r/Nexus5/comments/2g0i3m/no_wifi_or_bluetooth/
http://www.reddit.com/r/Nexus5/comments/253y8d/my_nexus_wont_activate_wifi_and_bluetooth/
http://www.reddit.com/r/Nexus5/comments/2pur0v/wifi_stuck_on_turning_on_mac_and_ip_addresses/
http://www.reddit.com/r/Nexus5/comments/361ecw/help_wifi_and_bluetooth_stopped_working/
http://www.reddit.com/r/Nexus5/comments/2h4co7/wifi_wont_turn_on/
http://www.reddit.com/r/Nexus5/comments/2hpj2w/can_no_longer_connect_to_wifi_stuck_at_wifi/
http://www.reddit.com/r/Nexus5/comments/2wjk38/wifibluetooth_issues/
http://www.reddit.com/r/Nexus5/comments/2zboet/no_wifi_no_bluetooth_and_reboots_whenever_i_press/
Other Links
http://forum.xda-developers.com/google-nexus-5/help/wifi-stuck-t2721643
http://forum.xda-developers.com/google-nexus-5/help/bluetooth-t2733672
https://productforums.google.com/forum/#!topic/nexus/IJSOuc7gw0w;context-place=forum/nexus
https://productforums.google.com/fo...otification#!category-topic/nexus/1H6ZiIMYrtw
https://productforums.google.com/forum/#!topic/nexus/ke-OEPLbRSQ
https://productforums.google.com/fo...xus/lollipop|sort:relevance/nexus/NbO-AGvRCLk
http://code.google.com/p/android/issues/detail?id=80028
I found this, but not really sure it’s the same thing….. http://forum.xda-developers.com/showpost.php?p=52441901&postcount=47
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+1
I'm facing the same issues and I tried all the possible steps I could find on internet trying to repair the problem.
Actually, since the latest updates I was encountering some issues with the WiFi only: not turning on either off and not showing properly the MAC addres. So I decided to factory reset, even SDcard and since yesterday I have tried all the possibile guide I found to internet to fix the MAC address not showing and the WiFi not turning on/off but nothing worked. I tried even to flash again the old factory images, such as KitKat, Lollipop, etc., to lock the bootloader again and to dismantle the phone in order to clean the motherboard, but nothing worked. Phone still gives me MAC address 02:00:00:00:00:00 alternatively with the correct one, I can't figure out on what it depends because sometime it seems to work: it shows the correct MAC, it connects to wifi network; suddenly it doesn't!
I'm really going crazy to understand what's wrong.

You'll have to dig up my final posts on this , but in a nutshell, send into LG for repair, select cheapest option they offer. Receive mint phone. My cost was $45 and about one month... I picked up a cheap $20 phone to get me by.
In other news.... I now have a 6p!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Renton91 said:
+1
I'm facing the same issues and I tried all the possible steps I could find on internet trying to repair the problem.
Actually, since the latest updates I was encountering some issues with the WiFi only: not turning on either off and not showing properly the MAC addres. So I decided to factory reset, even SDcard and since yesterday I have tried all the possibile guide I found to internet to fix the MAC address not showing and the WiFi not turning on/off but nothing worked. I tried even to flash again the old factory images, such as KitKat, Lollipop, etc., to lock the bootloader again and to dismantle the phone in order to clean the motherboard, but nothing worked. Phone still gives me MAC address 02:00:00:00:00:00 alternatively with the correct one, I can't figure out on what it depends because sometime it seems to work: it shows the correct MAC, it connects to wifi network; suddenly it doesn't!
I'm really going crazy to understand what's wrong.
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