yashsingh1/xdaforums huggingface dataset:
[MTCD  Android Head Units Q&A] blackhawk:
Optical toslink between audio equipment is highly preferred.

Even with a common grounding point for -all- connected equipment the chance of an unsnubbed high frequency feedback loop is real.

If so it will likely blow all your twitters and possibly the power amp in seconds*.

If the amp's big enough you'll see smoke and fire🤣

At the very least use a common grounding point for all pieces of equipment. Use heavy gauge wire and keep the wire length as short as possible.

*A high frequency typically 40hz or higher feedback loop when fed into and/or through a power amp will result in a huge wattage output at that frequency. It will cause the speaker bypass to shunt all of it through your tweeters and effectively short out the power amp💥
[MTCD  Android Head Units Q&A] objecttothis:
You probably know much more about this than I do, but a few things don't make sense to me. You said high frequency feedback loop, but then referenced 40hz. Did you mean 40khz? 40hz is a pretty low frequency and I would think would be cut out by both integrated HPFs and amp level HPFs. I am very familiar with toslink as I use them between my PC and home audio amplifier, but I've never heard of them used between a head unit and amp. Every head unit and amp I've ever owned have used RCA outputs. I'm not saying the risk isn't there but why would both head unit and amp manufacturers not use them if RCA is so dangerous? It really is an honest question, so please don't take offense.
[MTCD  Android Head Units Q&A] Bob_Sanders:
Well... toslink is preferred in high end equipment (bandwidth suffers in the cheap stuff).... and I would not describe these head units as "high end"

I think you misunderstand. I'm asking OP to look for a common ground

FOR TESTING

with his multimeter. If all the rca's are not working then there is a chance that something common (like the ground on the rca jacks) is broken.
[MTCD  Android Head Units Q&A] Bob_Sanders:
RCA's are mostly used on automotive head units. They have been around for decades. toslink is the new kid on the block and there are a lot of problems with it... frequency issues, sample matching issues, select few apps to use toslink with... yadda yadda. Personally speaking, I wouldn't use toslink instead of rca in a million years. Now it does have the advantage of less noise pickup on long runs of cable, but manucacturers like pioneer, alpine, kenwood... etc have combatted the noise issues with high voltage output from the rca's (pioneers are now 4 volts peak to peak on the rca's while android is still something like 1.4 volt PtoP). Then on the other hand with toslink you need HIGH QUALITY dac's to avoid sample and frequncy issues... and these android head units are NOT what I would describe as anywhere NEAR "high end"+

toslink.... not me thank you... not at this low price level anyway.

As for blowing tweets with stray "40hz" signals.... hasn't happened to me in 40 years of using rca's :)
[MTCD  Android Head Units Q&A] blackhawk:
Just a friendly old school warning so peeps never learn what driver coils smell like...

Cheap stuff will likely have less design fedback safeguards than high end equipment.

Regardless of the amp's frequency response the fed back will be on the high end. 10khz would still behave like 60khz as far as the crossover is concerned.

Regardless its best to wire/ground it proper for best performance and minimal voltage drops... wire is cheap.

I have a friend that saw this happen on a high end system. All they heard was a static like noise and in less than a second the tweeters were smoking. A couple hundred down the drain. It can get real expensive fast and by the time you realize it's happening, it's already done.
[MTCD  Android Head Units Q&A] objecttothis:
Yeah, I don't think anyone sees these as high end in the audio production department. I think they have become somewhat popular because a lot of the main players in audio head units have been a little slow in the freedoms that Android provides in terms of apps, navigation, etc. They are too busy pushing their proprietary interface crap.
[MTCD  Android Head Units Q&A] Bob_Sanders:
You can blow a simple ic chip with static so we shouldn't use them? Freak things happen. That's life.
[MTCD  Android Head Units Q&A] blackhawk:
No that's ignorance and ineptitude.

I handled thousands of IC's and flat packs without damaging them by heat or ESD.

On a high end system with 7 mains blowing them out alone would be over $2G in replacement parts.

Anything worth doing is worth doing right.
[MTCD  Android Head Units Q&A] Bob_Sanders:
Well... as far as I know the higher end units are still going RCA..... and if there is ever a change I suspect toslink will be passed over in favor of the MUCH BETTER hdmi standard anyway.
[MTCD  Android Head Units Q&A] Bob_Sanders:
I have too... never blown one with static discharge. It shows you how silly it is to worry about such a thing. Is it possible? Sure. Probable? NO..... much like blowing a tweet with a static discharge

I will say however, what I have seen is a power amp losing its ground which in turn blows the rca ground traces on the head unit board... which is why I suggested to OP to use a ground inside the machine with his meter instead of the rca grounds in the first place. It's possible he blew a ground trace off the board if his main amp wasn't PROPERLY grounded. If the amp loses its ground then it starts trying to use the rca's ground as its main ground source and the traces on the board weren't built to accept more than an amp or so.
[MTCD  Android Head Units Q&A] zigzag69:
did anyone end up finding out what the problem was? I added a line driver to boost the front, rear and sub outputs but the front and rear are literally almost nonexistent, it’s so quiet.
[MTCD  Android Head Units Q&A] Bob_Sanders:
There is no special switch to turn on the line outs on the Dasaita. They are on all the time whether you use them or not. I have mine connected and they work fine. Granted they only put out a max 1.4 volts peak to peak which is the old standard 20 years ago. Today's amps are expecting 4 or 5 volts peak to peak, but a lineout preamp should solve that problem.

Try running a separate ground wire from the head unit to the amplifier and see if that does anything. If that doesn't work, then the machine is defective and should be returned.
[MTCD  Android Head Units Q&A] zigzag69:
Thank you for the reply, oh okay. I'll give that a go tomorrow morning and will report back. It's odd because the sub outputs are outputting just fine, but I bought a dasaita harness that breaks out the speakers to an RCA male in order to connect it to the RCA female ports. Also, I have 2 wires on the dasaita harness labeled AMP 1 and AMP 2. Do I connect these to a 12v power?
[MTCD  Android Head Units Q&A] Bob_Sanders:
Those wires I believe are your remote turn on trigger wires to turn on your external amps. They go to the remote turn on connection on your amp(s) similar to the pic below. Some of the newer amps don't require this trigger because they sense the input voltage from rca plug, but normally this connection needs to be done.
[MTCD  Android Head Units Q&A] zigzag69:
Thank you for your reply And oh okay thank you, I figured. So I purchased this Line Driver https://www.amazon.com/dp/B07PJ2KZ63?psc=1&ref=ppx_yo2_dt_b_product_details and used it to boost the Front, Rear and Sub RCA output of my Dasaita PX6 Max 10 unit with DSP and it for sure boosted the sub output, and I did seem to notice it boosted the front and rear but very minimally, it was still very quiet. I tested the outputs of the line driver and outputs of the Dasaita RCA and it did seem to appear that those did indeed worked.

I'm guessing that its this adapter that I purchased https://www.amazon.com/dp/B08L6LLWNC?psc=1&ref=ppx_yo2_dt_b_product_details seems to be ducking down the output or something. Everything is turned all the way up in the factory settings voice menu. Is my speaker line to RCA adapter defective? Should I request a replacement?
[MTCD  Android Head Units Q&A] Bob_Sanders:
I couldn't tell you. I'm not using the speaker to rca adapter. I'm using the original rca outs which came with the dasiata.

The only reason people are using that adpater is if they have noise problems on the original rca outs. In the beginning I had a bit of noise with the original rca connectors but it turned out to be a loose ground. What amplifiers are you connecting to?
[MTCD  Android Head Units Q&A] blackhawk:
Then all you can do is use a common grounding point and heavy gauge wire (#10 or thicker) for grounding all units, amps, etc.

No daisy chaining ground wires.
[MTCD  Android Head Units Q&A] Bob_Sanders:
In reality all rca connected devices have daisy-chained grounds.... and always have. The ground on the rca is the same ground as the vehicle frame or the heavy ground coming out of your external amp(s). However, each amp needs to have its own (heavier) ground because the rca ground was never meant to be a current carrying ground. The rca ground is there only to act as a shield against magnetic noise and other such things.
[MTCD  Android Head Units Q&A] blackhawk:
This isn't a current capacity issue, it's a signal integrity issue.

The RCA shell is for the shield ground. And that is the problem.

If the cable shield is only grounded on the amp side then that's one less ground loop. That's the proper way... if you build your own cables.

One big reason for the heavy gauge single point ground straping is that it will help sink the current rather than the current (and feedback, noise etc) following through all those ground connections that shouldn't be there.

There can only be one pathway for the ground.
[MTCD  Android Head Units Q&A] Bob_Sanders:
Which is exactly why I said "because the rca ground was never meant to be a current carrying ground."

If you leave one end open then you run the risk of creating a kind of antenna which can attract rf signals.... which is why it is closed. Now that's not to say it can't be left open, but it requires a terminating transformer or similar on the end.
[MTCD  Android Head Units Q&A] blackhawk:
It's not "open ended"; the cable shield is grounded on the acquisition amp side*... get it?

I've repaired data ground loops on capital pieces of equipment.

Ground and V+ are best taken directly from the battery terminals as well using very heavy gauge twisted pair wires. Never from the alternator.

*that requires a custom cable or a commercial one end grounded only.
[MTCD  Android Head Units Q&A] Bob_Sanders:
Yes. I understand, and what that does if the non grounded end is not terminated properly, it can create an antenna effect. That's why you normally don't see manufacturers creating rca cables with one side open.

Not withstanding, when all grounds are tight and properly run then the vast majority of systems do not have ground loop issues. It's mostly these cheap chinese android headunits which suffer from ground loop and other noises.
[MTCD  Android Head Units Q&A] blackhawk:
The goal is to eliminate multiple grounding points of the shield, not increase them.

AC current/transient spikes running from chassis to chassis through the cable shield is much more likely couple with the signal wires as well creating ground loops.
[MTCD  Android Head Units Q&A] Bob_Sanders:
Yes... and no.

Ground loop noise isn't really caused by different grounding paths but rather the

different potentials

in those paths. The given impedance in one ground path as compared to another is not always the same.... and THAT is what cause the feedback noise. One rca cable a bit looser than another for example causes a different grounding potential in a set of rca cables. One cable longer than another can cause a different grounding potential.

So the goal is not necessarily to ELIMINATE ground paths (although that can help) but rather to ensure that any and all ground paths used are as close to the same potential as possible.
[MTCD  Android Head Units Q&A] zigzag69:
Oh okay. I'm still using the original RCA outs, I just bought the adapter to utilize the RCA outs in an attempt to boost the signal from 1.4-2V to at least a 3-5V output through the RCA outputs. But from the other posting, the other said the RCA outs are a non amplified signal coming through, would this line driver that I'm using not work to boost the non amplified signal enough for the front and Rear RCA outputs?
[MTCD  Android Head Units Q&A] Bob_Sanders:
Any external power amplifier should be able to use 1.4 to 2 volts. It will just be a little quieter. That's why people buy the line level adapter... to amplify the rca signal a bit more before it goes into the external Power amplifiers.

But rca outs were never meant to be operated without and external power amplifier (the booster you bought is a PRE amplifier, not a POWER amplifier).

Your head unit already contains an internal power amplifier for the speakers (use the speaker wires for this). Some people don't like the internal amp though, so you are given the ability to purchase and use external power amplifiers. That is what the rca connections are for.... to use a separately purchased external power amplifier.
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] neobuddy89:
OrangeFox Recovery

Installation:

0. Backup your ROM, your data, your internal storage, and your settings/apps, to an external device

1. Reboot to fastboot screen, connect USB and send fastboot commands "fastboot flash recovery <recovery image file name including extension>"

OR

1. Reboot to existing TWRP recovery and flash image file to recovery partition

2. Reboot to recovery

3. Enjoy!

Features:

* Updated with latest TWRP commits

* Built-in support for installing init.d functionality

* Built-in support for installing Magisk

* AromaFM

* Flashlight

* Password, torch, led

* Superb new UI and themes

* OrangeFox theme engine:

- choice of theme (black, dark, etc)

- choice of color scheme

- choice of splash screen

* Alternative lockscreen

* And many more!

Source Code:

https://gitlab.com/OrangeFox

https://github.com/neobuddy89/android_device_oneplus_cheeseburger-twrp

Screenshots:

https://files.orangefox.tech/Screenshots/R10/

IMG Download:

19 Feb 2020: https://sourceforge.net/projects/cr.../OrangeFox-20200219-cheeseburger.img/download

Frequently Asked Questions:

* See https://xdaforums.com/showpost.php?p=76885728&postcount=3

Credits

* TeamWin - for TWRP

* The OrangeFox Team - for your hard work

XDA:DevDB Information

OrangeFox Recovery Project, ROM for the OnePlus 5

Contributors

neobuddy89

ROM OS Version: Android 10

ROM Kernel: Linux 4.x

Version Information

Status: Stable

Created 2020-02-18

Last Updated 2020-02-18
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] vdbhb59:
Added to Telegram Channel here: http://t.me/op5_files/1559
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] rayalien:
The recovery is very beautiful !

could you add the support to F2FS ? it can't read my data partition，Thx.
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] vdbhb59:
Also, seems it is unable to restore backups within same ROM for Q. I can try unless you are aware of it.
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] str8str:
Thanks Mr neo. Backs up great looks great. Haven't tried to restore yet
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] kimon60:
Can it be used to flash custom pie roms?
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] Sc4r3Crow:
Did you use it to flash a rom? If so, has the procedure been performed without any issues?
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] str8str:
So far just did backup. Can't see why it wouldn't work
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] vdbhb59:
Yes works. I tried install, backup, restore, moving files, etc. I am Encrypted BTW.
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] str8str:
Can anyone tell me if wiping vendor is necessary when changing roms or clean/dirty flashing
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] morfances:
yes,recommended.
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] spo0nless:
tried to flash twrp recovery

It's so pretty.

Restoring from a backup is working.

When trying to flash twrp-3.3.1-0-cheeseburger.img using this recovery it gets stuck in the bootloader and wont start anything.

not sure if this is an issue with twrp recovery. or even a corrupted file.

using firmware_9.0.10
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] card13:
[MENTION=10282971]spo0nless[/MENTION] What ROM was the image made of and which parts are backing up/restoring?
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] mnurolcay:
Is it possible to make it OP 5T compatible ?
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] ShotTard:
It works fine on the 5t, I've been using it for a few weeks and the only "issue" is that it says cheeseburger instead of dumpling.

I've had no issues restoring nandroid backups (both ones made with twrp and OrangeFox).
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] Pokemetti2:
Isn't there a port specifially for the 5t?
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] mnurolcay:
There's one but a bit outdated. This one is more up to date esp about Android 10.
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] Sc4r3Crow:
It's surely a corrupt file. I've flashed other twrp versions using OrangeFox and it worked everytime. Just to be sure you could flash 9.0.11 in advance and have a try to flash another twrp after that...
[OnePlus 5 ROMs, Kernels, Recoveries, & Other Devel] Horcza:
If I select internal memory, along with the usual, to wipe, is that the equivalent of TWRP's format data?

edit: just noticed the note saying it got moved to manage partitions, so nvm
[Xiaomi 6X (Wayne) ROMs, Kernels, Recoveries, & Oth] Stocco:
PixelExperience for Mi 6X [wayne]

What is this?

Pixel Experience is an AOSP based ROM, with Google apps included and all Pixel goodies (launcher, wallpapers, icons, fonts, bootanimation)

Our mission is to offer the maximum possible stability and security, along with essential and useful features for the proper functioning of the device

Based on Android 10.0

Whats working?

Wifi

RIL

Mobile data

GPS

Camera

Flashlight

Camcorder

Bluetooth

FMRadio

Fingerprint reader

NFC

Lights

Sound / vibration

Known issues

Nothing

DON'T FLASH GAPPS, ALREADY INCLUDED

Download

Donate

Liked my work? Give me a beer

Translation

Help with project translation

Stay tuned

Our Telegram channel

Our blog

​

Android OS version: 10.0.0_r27

Security patch level: February 2020

Build author/Device Maintainer: Stocco

Device Source code: https://github.com/giostocco

Source code: https://github.com/PixelExperience

ROM Developer: jhenrique09

​
[Xiaomi 6X (Wayne) ROMs, Kernels, Recoveries, & Oth] 我耳机jj:
you use who's Device Tree:confused:
[Xiaomi 6X (Wayne) ROMs, Kernels, Recoveries, & Oth] Stocco:
Tree from Max
[Xiaomi 6X (Wayne) ROMs, Kernels, Recoveries, & Oth] Lupin The Third:
Dear OP, [MENTION=6051580]Stocco[/MENTION] please read your PM.

Thanks,

-Lupin The Third
[Networking] crap_brain:
Hi,

I buy a XDA Stellar recently. Can anyone tell me the complete process to install it in my mobile?

I was in Skype side to download skype but there was skype for nokia, sony erricson etc. but not for XDA Stellar or Tytn 2..

so now which one will work for TyTN 2? can anyone give me the link to download skype for XDA Stellar?

crap_brain
[Networking] vj4:
you just need the windows mobile download found at..... i cant seem to find a web link because it keeps trying to make me get it for xp but if go to skype.com from ur stellar via wifi it shud sort you out.
[Networking] crap_brain:
Hi vj4,

Thanks for reply. I try to download skype from in Stellar but cant download it. It show only 4 nobile phone "Nokia, Motorola, Samsung, Sony Ericsson" but not XDA Stellar or TyTN 2...

which option you suggest me to download.

shuvra
[Networking] crap_brain:
Hi,

I get the skype now in my mobile... thanks

Can you tell me if i use my home wi-fi then will O2 charge me??? or O2 will only charge only if i use wi-fi in Hotspot?

crap_brain
[Networking] vj4:
no from wifi it shudnt charge you at all even if ur in a hot spot because you dont use any of the o2 network try turning your phone radio off in comms manager and it shud still work. fyi i found that a program called fring is ace it dus msn messager as well as skype and i found it to be a lot faster than skype. oh btw the stella is just a kaiser you might be better coming over to our fourm insted of the general things like this get over looked and a mod might have words with you.
[Networking] crap_brain:
Hi vj4,

thanks for your reply... I we join in kaiser forum...

bye
[Samsung Galaxy A50 Guides, News, & Discussion] GoauldGod:
Is it possible to flash from an "F" DS to a "FN" DS ROM to enable NFC?

So I just realized my new A505 F/DS does not have NFC while I was setting up Google Pay. It's the one feature I used very often with my old phone at point of sales, so I am really depressed about it. Before I attempt to return the phone, is it possible to just flash the FN ROM? Assuming that the hardware exists?
[Samsung Galaxy A50 Guides, News, & Discussion] muhamet:
You can try,when i flashed F firmware to my FN model there is no option for NFC
[Samsung Galaxy A50 Guides, News, & Discussion] GoauldGod:
Does that mean that NFC was working before the flash? Gives me hope that the hardware is there.
[Samsung Galaxy A50 Guides, News, & Discussion] Alexxxx1:
Model A505F is made in India, model A505FN is made in S. Korea. Motherboards are not same, and its 100% sure that NFC chip is not integrated in A505F. Sorry.
[Samsung Galaxy A50 Guides, News, & Discussion] GoauldGod:
Makes sense :( Well, doesn't matter now I guess, I ordered an A70 MN, burning a new hole in my pocket.
[Samsung Galaxy A50 Guides, News, & Discussion] ThePeaceMaker25:
My Galaxy A50(A505F) is manufactured in Vietnam, that's what it says on the box.
[Samsung Galaxy A50 Guides, News, & Discussion] Alexxxx1:
You can check with Apk

https://play.google.com/store/apps/details?id=org.vndnguyen.phoneinfoView attachment 4957681
[Samsung Galaxy A50 Guides, News, & Discussion] ThePeaceMaker25:
It says Vietnam
[Samsung Galaxy A50 Guides, News, & Discussion] Alexxxx1:
Yep, it seems that Samsung has more manufacture sites.
[Samsung Galaxy A50 Guides, News, & Discussion] xdaer2014:
India doesn't make any Samsung device at all

THE A505FN is made in Vietnam not India
[Samsung Galaxy A50 Guides, News, & Discussion] ThePeaceMaker25:
Could that mean that the A505F and A505FN use the same motherboard, but nfc is disabled on the software's side for the A505F's manufactured in Vietnam? If so flashing the FN rom could enable nfc??
[Android Q&A, Help & Troubleshooting] eli7897:
https://kazuna.co.jp/verizon_etalk/

i have phone kazuna kaz f019

i am open usb debug

but when i connect to computer

no jump rsa

and i can't use with adb

error: device unauthorized.

This adb server's $ADB_VENDOR_KEYS is not set

Try 'adb kill-server' if that seems wrong.

Otherwise check for a confirmation dialog on your device.

who can help me

thanks
[Android Q&A, Help & Troubleshooting] earpod:
HI can you please say say how you get to Developer options on this device?(eTalk)
[Android Q&A, Help & Troubleshooting] rockyroad982:
Check out https://forums.apps4flip.com/d/331-kazuna-etalk-app-guide-discussion/9. It contains a full guide on how to enable ADB, root, modify the OS plus more
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] Rayg1022:
Can someone explain to me why I would pay $1400.00 for galaxy S20 when ok have a note 8? I use my phone now for photos, videos, vlogging, texts, and emails

Thanks,
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] peachpuff:
You're right, might as well just get the note 1 then, it can do all those things just fine...