yashsingh1/xdaforums huggingface dataset:
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
A review for the pbh 14.

I flashed it on havoc os unofficial, used for 3 days

As expected from the kernel, it is amazing. Charging speed has been increased drastically!

If you use a good quality quick charger(3A) with compatible cable you can get speeds upto 2500+ mA. No need to tell if that much speed is good or bad. I personally like it. If you don't want to use quick charger then also its fine because the speed with a 2A charger is also very good , around 2200 mA.

Now Battery backup: after 5 + hrs of light the battery only drained from 100-70! ( See screen shots below)

And gaming performance too is amazing. Faced very little to no frame drops while playing on hd + high.

In short if you are looking for an amazing all rounder kernel , which gives good bb and gaming performance, pbh is the kernel for you.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] EmanzzKie:
Great review! :good:
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] stormm00700:
Performance

Its not the good kernel but the most stable and best kernel by our dev #Nikish21 overall i love the charging nd the performance of the kernel Its amazing comapired to all Thnks dev for the asm kernel #PBH_Rocks:D:D:D:D:D:D:D:D
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] vewa52:
Always have issues with fingerprint reader not detecting touch whenever I switch to this kernel. Any suggestions? With others at least it works intermittently after two attempts.

Also, proximity sensor doesn't work as screen doesn't turn off during calls.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Aayush_2000:
Please give the name of your quick charger and 2.4 mA cable (i wanted to buy that)
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Nikish21:
PBH v14.1 Hotfix build

Changelog

v14.1-

1 CHarging Made more Consistent

2 Heating Issues and Viper Sound mod issues being reported is fixed(miscellaneous fixes)

3 qpnp-haptic VibratorHW strengh is now controllable

Download:

1 KERNEL : https://www.opendesktop.org/p/1286975/

2 Tunables(UPDATED) : https://www.opendesktop.org/p/1291624/

XDA : https://xdaforums.com/showpost.php?p=79332616&postcount=382

f you Like My Work and want to support Developement : paypal.me/NikishD
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
Getting consistent 2100+ on a 2A charger on v14.1
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] axit50:
How you customised this clock?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] anurag200:
Did you do any other setting other than flashing kernel .like applying tunebles??
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
No.

I didn't apply the tuneables.

And also i flash in another way.

Directly flashing the kernel is not the best way to go.

Either flash it when you're flashing a new rom or dirty flash the rom you're on and then flash the kernel for best results(this way you wont lose data)

---------- Post added at 12:00 PM ---------- Previous post was at 11:59 AM ----------

Thats a rom customisation.

On bootleggers.

The clock style is sammy(accent) and the clock font is road rage.

Available on more roms as well like colt.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] anurag200:
Is there any way to save the settings of havoc os,because after clean flash it takes very much time to setup the device again.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] bagadesh@:
Can anyone explain how pbh kernal pushes charging speed to 2.5+ when the charging port maximum allowed current is 2.0.

If we can alter that using custom kernel then why not 4.0?

Current I'm using havoc's latest build. Charging speed is dead slow like 1.0. So today flashed pbh 14.1. But still it only goes to 1.5. Someone suggested it takes 24 hours kernel to adjust and settle.

Is it true?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] EmanzzKie:
Dirty flashing kernel would be fine or not?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Guilhermex12:
4??? That's a grenade
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] bagadesh@:
Oneplus 3...6t uses 4.0. And huawei fast charge uses 4.5. If they can then why not?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Scanysdm:
Rom pls?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Guilhermex12:
There are several things behind battery technology, you can't just push the limit of every battery available and get a crazy charging speed
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] DinIslamJoy:
charging takes over 02:30 hours any solurion?

using with arrow os latest pie rom.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] rampittu007:
I use stock charger ...i get about 950-1500 constant charging speed in v13 ..in the new update it charges for about 2300 for a couple of minutes and then it drops to 500

Any solutions for this prob? I also used redmi charger! It works good but the same issue takes place after 10min of charging!

Please Help me for this issue!!:(
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
Bootleggers by itachi

---------- Post added at 02:58 AM ---------- Previous post was at 02:57 AM ----------

Thats why i told to dirty flash.

Everything will remain like it was when you dirty flash.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
How much does your phone's temperature reach while charging?

If it goes above 43 then there's nothing you can do, then it'll charge slowly.

What you can do for that is charge your phone with your ac/cooler on so that it doesn't go too high.

In my room the temp is around 25- 30°C.

And so my phone never goes above 41°C while charging.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
From 0-100?

2:30 hrs is very good.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] rampittu007:
Bro at 1st temperature is at 44 or 46! I'll cool it up and then I'll put in charge! But while charging it heats up to 44...
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Parazod:
Can any one update on if the tunables is better than the default settings?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Srajan SG:
Yes they are better (obv)

Interactive now seems a more efficient and frequencies dont stay high unless there is enough workload

If you want a detailed look at what each setting in Interactive tunables do, you can take your time to study these

https://android.googlesource.com/ke...1.0_r0.2/Documentation/cpu-freq/governors.txt

hav fun... happy modding :)
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] sachin5555:
Hi can i dirty flash 14.1 over pbh14 version
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] chaiturace:
But, while playing pubg mine is going up to 47 degrees even in an air conditioned room
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] KrrishNoob:
Hi Sir, I installed this kernel as per described. But after this Google photos doesn't open. Im using Asop extended rom phone is not rooted.

Please help. I had taken backup but i deleted it by mistake.

Ps. 1st time writing here sorry if i did mistake.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] savijaysalem:
while charging automatically turn on wifi pls work on it
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Balaji kommajyosula:
This kernal dont support otg right fix it guys
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Piyush Garg:
Sorry but i'm facing some issues

Like

Power dont work after some time if screen is of and some time ph is self opening and taping...

I don't know why

Can u tell me how to remove it

I'm using pixsl experience rom
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] DinIslamJoy:
mine working fine
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] AlphaKilr:
How do i flash the new updated kernel if there is an update to it?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] DinIslamJoy:
Twrp>install>select new updated zip and flash
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] AlphaKilr:
What should i wipe?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] DinIslamJoy:
nothing
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] AlphaKilr:
Shouldn't i wipe the dalvik/cache?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] DinIslamJoy:
optional
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] stellarindigo:
I'm liking this kernel. My experience is

1) unstable charging speed like initially plugging in it gives 1900 mah and then drops to 300 and sometimes as low as 50mah at normal ambient temp,but after wiping cache and dalvik it gave me constant 1700 mah output which is good but not rapid with stock charger.

2) PUBG works great on HD and medium frame rate,but occasional huge frame drops and low headphone game volume. Don't know if volume issue is related to ROM or kernel,I'm on Havoc 2.4 OS BTW.

3) speaker volume is good.

4) battery backup is good and idle drain is very low which is great.

5)All sensors work good, 4G VOLTE and wifi network is great.

6) overall,decent performance and battery just like promised. Thanks developer, please keep working on small bugs.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] AlphaKilr:
I wipe it before the flash or after the flash?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] DinIslamJoy:
i wiped after flash.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Rommaster94:
+1
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] ALYSKY:
How SOT do you have? I have only 5hrs! Latest havoc and pbhv14.1. Any solution?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] emuashui:
Noob qxn: how to backup kernel boot.img before flashing pbh?

Does pbh still support oreo? Thanks
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] DinIslamJoy:
TOO SLOW CHARGING, NEVER CROSSES 600mA

What to do?

---------- Post added at 12:40 PM ---------- Previous post was at 12:39 PM ----------

wirh flashify you can backup your existing kernel
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] deepakjuly20:
Charging speeds are slow 600 mah using fast charger. First flashed pixel experience AOSP Rom, then flashed this kernel, then wiped caches, then came to know about pie firmware update, flashed that too, then wiped caches, then again flashed kernel, then wiped caches again, but everytime charging speeds are low. Occasionally it rises to 1600mah but it drops in a minute back to 600-700. Can anyone please tell wheres the problem?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] DinIslamJoy:
same here, if you find any fix please let me know please.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
First of all don't update firmware like that.

Always change firmware before clean flashing the rom, after wiping everything.

So do this. Flash fw, then flash rom, then kernel, gapps,magisk(if you need it). Then wipe chache and dalvik.

Reboot.

This works for me all the time.

---------- Post added at 01:55 AM ---------- Previous post was at 01:49 AM ----------

There's two ways you can do this.

I'll tell you the easier one.

Open the installation zip file of the rom.

Extract boot.img and save it somewhere you know.

Thats it ;)

If you feel like pbh isnt good for you then you can return to your stock kernel.

Like this: go to twrp, Go to install ,Then select install image and select the boot.img file that we just extracted and install it into boot partition
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Divyashwar:
Getting no constant charging speed.... 500-1500mah...

Never touched 2k....

Same charger same cable with azure and trb kernal gives me 2k mah..

Using aex rom...
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] kspranav:
As others have pointed out, charging speed is unstable and gets low after some time. Temperature always gets upto 43deg on charging. Please check into this [MENTION=8160103]Nikish21[/MENTION]
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Nikish21:
A small Maintainance Update Focused on Battery Life is up

Changelog

1 All the reports of mA dropping after a while while charger has been worked upon and reportedly fixed. This is tested and reported a lot of times. Lemme know how it goes

2 Reportedly Better battery backup compared to the previous version

Enjoy https://www.opendesktop.org/p/1286975/

Awaiting Feedbacks :)

If you Like My Work and want to support Developement :

UPI: nikishdas21@ybl or http://paypal.me/NikishD

You all can use tunables of v14 if you want. But i suggest to compare which (default) or tunables works better for you
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] mayank..:
Pruu work sarr
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] mayank..:
This is what I am getting constant 2200+ mA
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] iamfarhanansari:
Which tunables to use it with

Is it important to use tunables?

What does it do?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] dougluna:
I had doubts if it would work in Oreo but I installed it here and everything worked out
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] dougluna:
This kernel is awesome.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] mayank..:
I had tried it in stock rom works great ( Oreo )
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] DinIslamJoy:
Thia kernel is awesome expect charging speed
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Rommaster94:
V15 far better than v14.1 in charging speed and voltage?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Din Toughboy:
not have tuning kernel v15 file?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] mayank..:
Lol I have tested myself pbh15 gives constant speed you need to buy quality quick charger in order to receive good speed.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
The kernel is awesome in every aspect. If you guys don't use a quality cable and charger then its not the kernel's fault.

I see ss of people charging in **** conditions like high Ambient temperature, use bad chargers and cables and also use there device while charging, and then blame the kernel for slow charging.

See this ss avg speed of 2100+.

Check if everything is fine from your side, only then complain. Otherwise no need to comment and mislead others.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
The bb is good even without tunables. But if you want to use then you can use the same one as 14.1 ;)
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Divyashwar:
That's not a scene dude !

Same charger same cable but tbh kernel giving me 2k mah...

But in pbh, lower than 1.5k and also not constant...

Don't forget did dirty flash before flashing....
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] DinIslamJoy:
using Stardust kernel, always over 1400mA,

and performance also better than this kernel.

---------- Post added at 03:59 PM ---------- Previous post was at 03:58 PM ----------

LOL bro, using stardus far better than thia kernel overall
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] mayank..:
I've tried all and pbh gives better bb better performance better charging speed thank you
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] DinIslamJoy:
Dont abuse please
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] FayAstro:
Does it support f2fs?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Rommaster94:
YES
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
I don't like comparing any kernel to another.

You shouldn't too.

Respect both the devs and don't compare.

I've shown an ss of 2100+ avg after charging for 83%.

So i rest my case ;)

---------- Post added at 04:01 PM ---------- Previous post was at 03:58 PM ----------

Lol

You get better charging speed on another kernel then use that.

But no need to come here to comment and mislead without knowing everything.

See the attached ss.

;)

---------- Post added at 04:09 PM ---------- Previous post was at 04:01 PM ----------

Changing your name to rom master doesn't make you one.

And besides that's not the point.

You're using the asus cable. You don't even have an idea that cable could in fact be the culprit.

Even other devs of the X00T community recommend to change the usb cable.

I've been a part of the community for a long time, I have even tested roms and kernels for our devs and have been learning more stuff from the devs.

See the attached ss, i know my stuff well.

And that's why I'm getting that good speed.

;)
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Divyashwar:
. When noobs talks like pros... ??? You keep staring at your ss...
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
And you have fun with your kernel sir;)

If you don't like pbh no need to come here.

And don't say you came to report to dev, because there is nothing wrong with the kernel:)
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
Change the cable once to a better one and see.

It happened to me too a long time ago on a different kernel

One day i was getting good speed at 1800mA and the next day after updating i got 300mA.

I contacted the devs via telegram group and everyone suggested me to change usb.

And that did the trick.

I've never had slow charging since then.

This happened back in November.

I have a lot of experience too, and mainly for our device.

Just join our telegram group (https://t.me/ZenfoneMaxProOfficial) and ask who yash bajpai is and everyone will answer.

Oh and by the way i use a redmi note 4 cable if you're interested in knowing that

;)
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Nikish21:
I can see some users are here to just compare it with others kernels. Be reminded, What other kernels does is none of my business, there is a way to report a bug, straightway comparing this kernel is bad, that kernel is good is completely immature and childish. I strictly dont entertain these type of conversation in my thread.

I hope you guys wont continue it again!

And Yes [MENTION=4892007]Divyashwar[/MENTION] [MENTION=8941013]Rommaster94[/MENTION] [MENTION=9560286]DinIslamJoy[/MENTION] lets have a one-to-one Conversation Directly Over HERE. Incomplete reporting without any logs is not expected from guys like atleast you who possesss pro flashing capacities.

Lets see if you guys can PM ME instead of creating such dramas here which i totally disagree!

Where are logs buddy?

This type of LoL attitude wont fetch you anything here buddy. You are free to use anyone's work you like. Be reminded you are not paying us, its my voluntary contribution to the community , So be in limit buddy!

Agreed! Despite so many times saying to use a good quality charger and cable i dont know why exactly they find it difficult to accept that!!

Cool. Glad you are Pro :D Send me Dmesg log over HERE as soon as you possibly can

Moreoever when large spectrum of my users get these type of speeds just because they understand what i meant by A Quality Charger, I am still dubious about the fact that what the logic behind these immature comparisons between kernels.

Anyone can compare these speeds now :)
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] anurag200:
Now everyones mouths are closed.???

Lol
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] bagadesh@:
Which charger and cable are you using?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
He uses redmi note 4 charger and cable too.

He used stock+rn4 cable as well and got 2000mA in that too.

So did I

Asus charger is good but cable is bad and causes problems.

And P.S. we use mi charger cuz it is better in quality than asus.

Asus gives 2000 mA and redmi charger gives upto 2200mA
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] ALYSKY:
+1
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] bagadesh@:
Yeah I now used xiaomi charger it got me around 2300-2400. But he is getting 2700+ which is nuts.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
Oh sorry :p

I've gotten into the habbit of telling people about the 2A charger.:D

In the ss you see here he used an uneed qc3.0 charger

Its rated 3A. And used a 3A cable with it as well.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Divyashwar:
When did I report ? Noob ! I just told what I got . Without logs its not a called report.

OP, I did not captured the logs cuz I changed the kernel....

Will test it out new pbh and save the logs...

And I did not compared the kernel to any other kernel... I just gave example to him.

Its a foolish things to compare kernels with other kernels. Every kernels have different values and based trees...
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
Thats the point i am making little boii.

You didn't report, you just compared it to a different kernel. And you did that two times. If you're here on pbh thread and want to help this kernel, then report with proper logs and dmesg.

But instead of doing that you're comparing.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Divyashwar:
Ok NooB
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
Oops.

Looks like I've hurt the little boii's ego.

Have fun little boii. Enjoy life and learn from your mistakes and acknowledge them when you were wrong instead of turning into an egotistical 2@

;)
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Divyashwar:
?????Ok pro noob
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
To those who are actually interested in knowing, the kernel is a beast at everything.

Especially charging.

My phone charged by 66% in 68 minutes.

Here's all the stuff that i do for charging:

1) Use a quality charger. I use a redmi note 4 charger and cable. The asus charger is good too if used with a different cable.

2) keep my phone's temp low. Because its summer right now the phone's temp while charging is going to rise too high, so try to charge with ac/cooler on so that temp doesn't rise too high. Asus have set an alarm at 42°C so after that temp speed slows down.

3) Avoid using the phone.

My rom: Viper OS and i am on piebeta firmware.

Those who are having problems try doing these three things. If it still doesn't work for you feel free to tag me I'll try to help in any way i can.

;) peace.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] diejoubou:
lul, when did flashing roms became hard af?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Neckspin360:
Please respect each other, we are in a community.
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Rommaster94:
Latest havoc+pbh v15+lenovo k6 power charger+lenovo k3 note cable

⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
See.

Just told you needed a better quality cable and charger. :good:;)

And I'm sorry if i said something bad. Its just that i got aggressive because of all the comparing and people not using better charger and cable.

Peace :D
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] Rommaster94:
[MENTION=8853579]yashbajpai13[/MENTION] :o
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
:good::D
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] rootjunkie404:
i am now on v14.1, if i want to go to v15! do i need to wipe cache/dalvik cache to install the kernel properly?
[Asus ZenFone Max Pro M1  ROMs, Kernels, Recoveries] yashbajpai13:
Dirty flash your rom then flash kernel, after that wipe cache and dalvik and reboot