MAC Address 02:00:00:00:00:00 - HTC U11 Questions & Answers

After updated to Lineage 17.1 i am facing problems with Wifi. In Lineage 17.1 everything works fine (except wifi-calling and volte). When flashing back to Stock (via Oreo-RUU or TWRP Restore) i don't get any wifi-connection. If turning on wifi, system turns off immediately. In settings I found, that mac address is 02:00:00:00:00:00... searching this problem, i found out, that this problem happened often via update from android 5 -> 6. Flashing Stock ROMs didn't help, restore of prior LeeDroid Backup neither.
Did anybody face this problem in former times? Does anybody know where MAC is stored / what the problem may be?

masi79 said:
After updated to Lineage 17.1 i am facing problems with Wifi. In Lineage 17.1 everything works fine (except wifi-calling and volte). When flashing back to Stock (via Oreo-RUU or TWRP Restore) i don't get any wifi-connection. If turning on wifi, system turns off immediately. In settings I found, that mac address is 02:00:00:00:00:00... searching this problem, i found out, that this problem happened often via update from android 5 -> 6. Flashing Stock ROMs didn't help, restore of prior LeeDroid Backup neither.
Did anybody face this problem in former times? Does anybody know where MAC is stored / what the problem may be?
Click to expand...
Click to collapse
I am experiencing the exact same issue. Same MAC address, same wifi issue. I tried flashing to stock Oreo, same issue. I'm going to try flashing stock Nougat, but I have doubts about that working. I also tried clean flashing the RR-P 7.0.2 ROM, and the same issue happens there too. I could not fin a way to restore the MAC address. I was able to look up the original address from my router's device log . . .
My HTC is the US T-Mobile version. @Golv can you help us with this new issue?
-UPDATE-
So far, going to stock Nougat INSTANTLY works. Right on the setup menus, all the wifi networks show up. Odd how stock Oreo gave us issues, but Nougat didn't. Will be going to RR-P 7.0.2 and seeing if the fix sticks I removed the SIM card when I put the phone back to Nouagt BTW if that affects anything.
-UPDATE 2-
Flashed stock Oreo after flashing Nougat, and in the setup menus, the wifi networks are showing up in STOCK OREO. Still with SIM removed. Now to flash the RR-P rom and see if I'm all set.
-FINAL UPDATE-
Flashed RR-P 7.0.2. Everything is back to normal.

Ikarbb said:
I am experiencing the exact same issue. Same MAC address, same wifi issue. I tried flashing to stock Oreo, same issue. I'm going to try flashing stock Nougat, but I have doubts about that working. I also tried clean flashing the RR-P 7.0.2 ROM, and the same issue happens there too. I could not fin a way to restore the MAC address. I was able to look up the original address from my router's device log . . .
My HTC is the US T-Mobile version. @Golv can you help us with this new issue?
-UPDATE-
So far, going to stock Nougat INSTANTLY works. Right on the setup menus, all the wifi networks show up. Odd how stock Oreo gave us issues, but Nougat didn't. Will be going to RR-P 7.0.2 and seeing if the fix sticks I removed the SIM card when I put the phone back to Nouagt BTW if that affects anything.
-UPDATE 2-
Flashed stock Oreo after flashing Nougat, and in the setup menus, the wifi networks are showing up in STOCK OREO. Still with SIM removed. Now to flash the RR-P rom and see if I'm all set.
-FINAL UPDATE-
Flashed RR-P 7.0.2. Everything is back to normal.
Click to expand...
Click to collapse
Thank you very much! I checked whether the sim card has an effect, removed it and flashed Stock Oreo -> problem still exists. Then i flashed Nougat an experienced the same effect: Wifi worked right on the setup menu.
@Golv do you have any idea why this happens? I think, this problem should affect anybody, who wants to go back to prior versions.

masi79 said:
Thank you very much! I checked whether the sim card has an effect, removed it and flashed Stock Oreo -> problem still exists. Then i flashed Nougat an experienced the same effect: Wifi worked right on the setup menu.
@Golv do you have any idea why this happens? I think, this problem should affect anybody, who wants to go back to prior versions.
Click to expand...
Click to collapse
I believe it is related to the hosd_signed.img file that likely writes over the persist partition. By downgrading, we are overwriting the hosd and the nougat ruu then formats and rewrites a new MAC address. It was interesting to see this happening, but I'm glad I found a workaround.

Sorry for the delay in reply. For some reason notifications stopped coming to me ...
Most likely you should change Mac address setting from random to device’s Mac address before switching to stock (Settings - Network - Wifi - Network details - Advanced - Privacy - USE DEVICE MAC).

Golv said:
Sorry for the delay in reply. For some reason notifications stopped coming to me ...
Most likely you should change Mac address setting from random to device’s Mac address before switching to stock (Settings - Network - Wifi - Network details - Advanced - Privacy - USE DEVICE MAC).
Click to expand...
Click to collapse
Hi Glov,
cant find these steps in U11 Leedroid. can you throw some more light please.

Related

[Q] Which unlock tool to unlock v4.1.1?

Hello I am still dealing with a weird problem that I posted on this forum over a year ago that was never resolved. Basically my tablet is stuck running Android version 4.1.1 (Build JRO03C.US_epad-10.4.4.25-20121228) because if I upgrade to any new versions (whether I do it as OTA or via micro USB) my wifi card stops functioning (it does not see any networks). Anyways I even went so far as to RMA it and Asus said they fixed it, shipped it back to me, but in reality all they did was roll me back to 4.1.1, saw the wifi was working and shipped it back to me saying they "fixed" it. Well of course the second I got it back I installed the OTA and wifi broke again... So I just rolled back to 4.1.1 and said screw it, I just won't update it anymore. Well this week I figured I'd try installing the latest OTA and hoped that this version would not kill my wifi, unfortunately the same exact issue has occurred and thus I have once again rolled back to v4.1.1 and my wifi works perfectly...
TLDR; Anyways apologize for the rant/story but basically I am stuck with using version 4.1.1 of Android and am considering flashing a custom rom to try and resolve some issues I am having with the stock rom's wifi, however the official bootloader unlock tools only say they work on version 4.0 (ICS) or version 4.2 (JB). I'm stuck on v4.1.1 so which tool should I use (or am I out of luck)? Thanks
v7 worked your JB version, but I think v8 will work as well. Just try them both - it's just an app. Either it works or not....
But that is the weirdest thing I've heard in a while (reg. WiFi).
What have you done on your router side? I cannot believe this is a problem with the tablet's wifi card.
Is this 'wifi not working' consistent on any router, any network?
Did you reset the router, change the channel?
Do you have possible interference: microwave, bluetooth speakers, bluetooth enabled or any other device that uses radio waves anywhere in the vicinity of the tablet?
berndblb said:
v7 worked your JB version, but I think v8 will work as well. Just try them both - it's just an app. Either it works or not....
But that is the weirdest thing I've heard in a while (reg. WiFi).
What have you done on your router side? I cannot believe this is a problem with the tablet's wifi card.
Is this 'wifi not working' consistent on any router, any network?
Did you reset the router, change the channel?
Do you have possible interference: microwave, bluetooth speakers, bluetooth enabled or any other device that uses radio waves anywhere in the vicinity of the tablet?
Click to expand...
Click to collapse
Thanks appreciate the reply - I just wasn't sure if using the wrong unlocker could brick my device... I'll give 8 a try first then 7 if necessary. The ironic part is that it requires a network connection to complete the unlock operation (I guess so Asus can cross your S/N forever off of their list of devices under warranty).
I agree that this is a strange problem as I have not seen anyone else report it. Basically I tried resolving this about 13 months ago with the help of this board and as mentioned I finally had to RMA it, but ASUS just rolled the version back instead of fixing anything and at that point I just wanted to enjoy using my tablet more than I wanted to fight with ASUS's customer service reps who effed up the first RMA job (the language barrier was also apparent in my interactions with them)...
Since over a year has gone by since the last time I tried an OTA, I hoped that the latest update would not have the same issues but alas, I'm not that fortunate.
As far as what I've tried - I have tried connecting to different networks and changing router channels and checking for interference, but the thing is, I'm quite certain the problem is with the tablet. When I first had the problem I lived in an apt building where I could 'see' 10+ wifi networks at any given time on all different channels with different routers/security settings etc. As soon as I applied the OTA the tablet could no longer 'see' any of them (even as I sat with my laptop/phone connected to wifi right next to it). I now live in a house (and have a different ISP, and a different router) and tablet works perfectly when on version 4.1.1. I don't have as many wifi networks visible from my house, but can still see a few of my neighbor's wifi networks both on the tablet (v4.1.1) and on other devices. But the second that I upgrade, all of them disappear from the tablet's view (but continue to be visible/work on other devices). I have turned wifi on/off, turned airplane mode on/off, tried connecting via wifi direct, rebooted, cold booted, booted into recovery, factory reset all data, etc. but nothing works because the tablet cannot see any wifi networks. And the second that I rollback to version 4.1.1 the wifi works perfectly... I have upgraded and rolled back probably at least 6 times and it is always the same result.
I do also get another weird side affect when I upgrade - the tablet refuses to turn off when I'm on any version higher than 4.1.1. So if I press "Shut Down", the tablet displays "shutting down" and the screen goes black and becomes non-responsive (as do the buttons, just as you would expect when turning off), but it does NOT actually shut down because if I come back 30 mins, an hour, 2 hours later I can feel it running very hot. The only way to truly shut it down is to let the battery drain...
So maybe a better question on my part would have been, do you think installing a custom ROM will even help resolve this issue? Or should I continue using 4.1.1 and not risk making the situation worse with custom ROMS?
WiFi problems are often kernel related..... Did you always take the update OTA?
Did you ever try to flash the latest firmware version manually? OTA updates do go wrong sometimes....
Although repeatedly???? It's weird. Maybe the server your tablet pulled the OTA from hosts a bad copy????
If you do not want to unlock, manually flashing the firmware would be one thing to try. OTA's patch the existing system, replace old files with new ones where necessary. Manually flashing the firmware replaces everything - a totally new installation of everything: bootloader, recovery, kernel, system and data.
But you cannot make it worse by flashing a custom rom. You unlock, flash a custom recovery (which does not change anything else on your system), then you make a nandroid (backup) of your current 4.1.1 system before you flash a rom. So you would always be able to go back to where you are now. On a custom rom you could even try out different kernels, which often are the root cause of wifi problems..
The thing is: If you want to flash a current custom rom like CROMi-X, based on Asus JB 4.2.2, or CROMBi-KK/CM11 which are KK roms, you always have to update your bootloader first. Your .25 bootloader is too old for any current rom.
You can easily do it once you have a custom recovery installed, but even easier would be to update to the latest Asus firmware 10.6.1.14.10 (after unlocking), then flash the custom recovery (TWRP 2.8.1.0), then flash a rom of your choosing.
Downside of this route would be you wouldn't have that 4.1.1 nandroid I mentioned earlier.....
Nahhh - thinking about it, I would recommend you go this route:
Unlock,
flash an older version of TWRP compatible with your current bootloader (TWRP 2.6.1.0 is ok)
make a nandroid of your current system
do a full wipe of cache, Dalvik and data in recovery
flash the 10.6.1.14.10 bootloader in recovery (I can talk you through it)
flash TWRP 2.8.1.0
flash a rom of your choice
Check out my guide, link in my signature, and let me know if you have questions
Thanks - I was able to successfully unlock my device with v7 of the unlock tool (v8 wouldn't even install). Thanks too for the advice on how to flash a custom rom safely. I've never flashed a custom rom before (have rooted a different android device before tho), so I appreciate any help.
I downloaded the blob file for TWRP 2.6.1.0 from here (techerrata.com/browse/twrp2/tf700t), but not sure how to proceed next, (also I don't see a link in your signature to your guide, but I am running a bunch of script blocking addins so maybe that's why) seems like all the guides I am finding say I need to get a copy of a fastboot program (but don't provide links), where can I find that? Again, I appreciate the help.
Sorry, my bad, I don't have a signature on XDA - wrong forum. LOL
My thread is here: http://forum.xda-developers.com/showthread.php?t=2688891
Ask any questions you may have in that thread, but it should cover your questions - I hope

[Q] Wi-Fi issue on 5.1 stock

Hi, I have a big issue on my Nexus 5 runnig L 5.1. Basically, I made some mistakes flashing various rom/kernels so I had to wipe evrything and flash the stock rom in order to fix it. Evrithing went fine, but now my wi-fi doesn't seem to work. I can't see any wifi network.
I have unlocked bootloader with the latest twrp. Hope you can help me solve my usse. Thanks in advance!
Turns out it wasn't the issue, but I managed to fix it. Basically the 5.1 hates wi-fi on channel 12 or 13, so I fixed it changing my router's channel from 12 to 10. So I leave this post here, just in case somone alse has some issue. You may close.

WiFi networks disappeared forever

My device is Galaxy S6 920F
WiFi networks stop showing up after a few days of Root, Rom, or Kernel. My S6 connects to the saved ones, but I have to add the new ones manually
And I experienced it with :
*Stock Rom + Adam kernel 2.3
*Stock Rom + UniKernel v8-0002 (both Odin and TWRP)
*XtreStoLite Deo-Mod 2.3
I'm on COH2
I tried to reflash the Kernels, but it didn't work. Clean dalvik/cache didn't work as well. Factory reset/Rom will solve it temporarily.
Help please
+1.
I have the same issue, not a big deal for me, but it's still a bug!
Good to know that I'm not alone. Although it's a big deal here because I've never been on the same WiFi for long.
Solved.
Its about (App Ops).
I reverted all the permissions to stock (allowed all), but I still didn't detect which permission behind the WiFi disappearance. Will be discovered soon.
I've been having the same exact problem... was having a version of it previously when i was rooted on 5.0.2 (couldn't find wifi networks, had to manually add them as if they were 'hidden')-- and now I have just flashed stock rom OH1, and rooted using UniKernel v8-0001 (both via Odin)
Now it seems that both
1. still no networks are 'available' (all appear hidden like before, and must be manually added, even if I know that there are many in the area), but also
2. all of the formerly remembered networks have been forgotten
I have a combination of security aps such as AppOpsX (AppOps 4.3/4.4), DisableService, AFWall+ (disabled) and LBE Security (I know, many)
Can't seem to find what to switch off to get things to reappear... I tried uninstalling the AppOpsX, and disabling the AFWall+, didn't work. I tried finding specific permissions to enable in the other programs too, and also failed....
Any follow up? Did you discover something more specific?
Anyone else have an idea? I thought google stored and sync'ed all my old wifi connections- but now I can't even seem to find where to re-sync them.
Thanks! (and sorry for being relative noob- happy to try to figure out logcats or whatever to provide more info)

Hot Spot Issue - Continued

Hello everyone sorry for this new thread and but I wanted to make sure I give more information on a fresh thread so I can hopefully fix this issue.
The issue I'm having is: When Hotspot is enabled on my Mate 8 Device, the 4G connection does not work on the device itself. However, anyone connected to the hotspot that I enabled has internet access via my Mate 8. Both cannot work simultaneously, only one or the other. This started 3 days ago.
What I did to perhaps cause the issue:
I rooted the factory ROM and changed something with the "Disable Service" app. I diabled the FusedLocation service. I rebooted then it was stuck on bootloop
I proceeded to wipe the phone on TWRP and installed a B180 ROM(Basic, stock international room - rooted) - Problem with Wifi Hotspot persists.
I thought it was the ROM's issue so I upgraded to B320 OEM ROM via 'dload' method - Problem Persists
Installed TWRP 3.0.2 and flashed another L29 B3xx ROM - Problem persists.
every time I installed a new ROM I wiped everything off the phone before I did so.
I'm absolutely stumped.
Please see the image i attached to my findings on my phone.
As you can see when Hot Spot is on, the 4G is "disconnected" and does not get an IP address.
Image Link
https://drive.google.com/file/d/0B-rbvYjlRN26bC1rbkpZYUc0dDA/view?usp=sharing
Any help is greatly appreciated again. Thank you for your time!
Eddie
Hi, I have the exact same issue, I am using a completely stock phone, with stock recovery and not rooted.
Have you found a fix to this problem?
Thanks.

Kernel and System UI Crash After Leaving Wi-Fi Range [Others?] [H990]

I've had a strange issue with my LG V20 ever since I got in last year and installed LineageOS 18.1 after rooting my H990 on LG firmware 10d (H990ds10d_00_OPEN_AU_DS_OP_1216.kdz) with DirtySanta and installing TWRP. Whenever I left the range of my Wi-Fi network, I would cause the System UI to become unresponsive while doing certain tasks - Unlocking, going to Settings -> Wi-Fi, expanding the Wi-Fi quick toggle in notifications, and probably a few more things.
This doesn't happen on the aforementioned stock firmware, nor on 10g AU 0117 stock firmware either.
For a while, I dealt with it by simply not using Wi-Fi. This sucked because I couldn't access computers over LAN, mobile data was slower, and it also had a data cap that I had to be wary of.
However, I decided I wanted to fix it.
I saw some recommendations involving installing every Lineage version since 14.1 sequentially until the latest. This didn't make sense to me, as clean flashing shouldn't leave any remnants behind, but dirty flashing that many versions went against everything I'd ever heard of regarding custom ROMs.
I also heard that it could be a modem firmware issue. Since I started on the last version of the stock OS for my region vulnerable to DirtySanta I thought surely not.
I later found out about KDZWriter, and used that to install the latest Nougat version of the stock rom available (also mentioned above). After installing that, I tried installing the latest LOS on top, which constantly informed me that com.android.media had stopped, I still had the LG sounds and wallpapers, and I didn't go through the initial setup - A sign of a dirty flash. I was still crashing in the same way too.
I formatted my data partition in TWRP (the "type yes to confirm" way), and tried again. Same crashes.
I've been awake for a little too long trying to fix this, but :
What I believe ended up working was backing up my /efs and /firmware partitions in TWRP while on rooted 10g firmware, dirty flashing LOS on top, formatting data as before, then flashing my /firmware backup in TWRP.
I'm hoping for this thread to document this issue as well as the fixes that worked for people. I saw tidbits of information spread out everywhere, so I'd like a central repository for it.
I hope this caffeine-induced writeup will help someone else with the same or similar issues.
If I have any more experiences with it, I'll do my best to write them down. Please share your experiences too!

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