Aftermarket Solutions to Calibrate iPhone Battery Health on iOS 17.4

[@ЭтоДрючинский]

Apple's anti-repair practices are plainly disgusting

[@seanlacroix]

Then don’t buy one. They’re actually a lot better than most companies and you don’t know why they do what they do. It protects against theft.

[@healspringy6300]

Yes, that's why major phone brand are following their footstep, some might even make the device harder to repair (Sony, Pixel, later Redmi series,...)

[@shpayindia1210]

Please make a Detailed video about this.

[@rewatechnology2008]

Stay tuned for the update

[@toseefirepair8684]

Try Battrey replacement on 15 pro max

[@alok6552]

Trust me, i got it done via same process and 2-3 weeks later, phone started acting weird. Automatic restart at anytime no matter whats the battery charge percent. Finally got it change through apple centre n the nightmare stopped.

[@eegee24]

in your case the original bms probably got damaged in some way (mechanically or thermally) your symptoms suggest that based on my experience

[@alok6552]

@@eegee24 might be the case..thank you giving a detailed explanation :)

[@neeyoooo]

u need to calibrate battery on ios. how? use ur phone until 0% and wait few hours (in my case, when bedtime) after that charge into 100% and wait until 1hours (10w charge) then u can unplug the charge. do this 2 times and in my case its works fine.

[@neeyoooo]

thats happen to me also after 2-3weeks lol

[@wan_x]

I love your background music. Do you have song name?

[@aarroonnv2989]

for all the iphone models apart from iphone 15, the battery replacement process with no message is exactly the same right? it does not effect the other models from 14 to 11. or does it effect every iphone once you have update to ios17.4

[@Levi1osa.]

Hi REWA, I have tried to flash iOS 18 and check "fix battery health" but 3utools give error and flash is not complete. 3utools error says: "unable to exit restore mode". If I try to fix battery health with iOS 17.7 the error doesn't happen. I think this is another restriction from Apple? Any solutions?

[@gluetech4377]

same problem, did you fix?

[@Levi1osa.]

Yes, when the error appears, unplug de phone and disconnect the battery. Connect battery again and plug. Flashing mode will appear. Quick flash without checking "fix battery health" option. Health should be on 100​@@gluetech4377

[@Coopzzz360]

I just don’t get how they’re still allowed to get away with this anti-repair nonsense.

[@1StraightPath2Islam]

They patched this solution on 17.4.1. Other solutions?

[@ninjarepair]

I was looking for answers for this too!

[@cba_Jord]

Came here for the same thing. Doesn't seem to be a cure for 17.4.1

[@Levi1osa.]

17.4 is now unsigned. The solution: Connect tag-on flex cable with programmed 100% battery health to device. Let the device show original battery due to apple patch (for example 86%). Flash to 17.4.1 (make sure that you tick "fix battery health" in 3utools) Device will still show 86% Flash AGAIN to 17.5 beta (before flash make sure that 3utools detects battery as 100%). If 17.5 beta doesn't work, try again with 17.5 beta 2. Congratulations your iPhone is at 100% again (worked for me with 14 pro and 11)

[@lordsumer2277]

Does it work if my iOS is 17.4.1?

[@Levi1osa.]

@@lordsumer2277 I just solved the issue with an iOS 17.4.1 (iPhone 12 Pro). I flashed 17.5 beta 2, didn't work. I flashed 17.5 beta 3, didn't work. I flashed 17.4.1, it worked. I don't really know why. Looks like you just gotta keep trying (always mark the solve battery health on 3utools)

[@casereviewer3026]

@@Levi1osa. im trying to increase the battery health on previous update I was able to now everything I do it stays on 89% ( I use preprogrammed battery flex )

[@gb4041]

thanks for your help, brother :)

[@gb4041]

@@Levi1osa. thanks for your help, brother :)

[@monochrome88]

Hi can original battery be calibrated ?

[@Sam48263..]

Hi, calibrated the battery. iphone in now showing 100% battery health but battery service message is still there? iphone 12 running ios 17.5.1.

[@karlsfactorylabo9293]

Great video thank you. I replaced new cell with original BMS cable.(tag on , W09 pro) then i did flush wit use 3utools. battery health shown 100% but still remain "service" message. (Before shown 68%) Do you know how to fix? 12 pro , ios ver 17.3 ,17.4.1 and 17.5 was same situation. Please help

[@eegee24]

have done this on 17.4.1 and it didn't work out still the old battery health gonna try it with 17.4 upd: reflashing to 17.4 with "fixing battery health" gets it done luckily 17.4 is not unsigned yet

[@gb4041]

thanks for your help, brother :)

[@murganes3107]

If you write new data on the battery using for example a Qianli icopy do you still need the tag on flex? Or just the restet in 3u tools?

[@rewatechnology2008]

As you can see in this vedio we already shared you the way that we do not need to use the tag on flex, and it is using the JC programmer to deal with this problem, and all of these repair methods needs to flash the phone to complete

[@Pandakids09]

So I’m just starting out and was wondering what’s a good device to have restore True Tone and the battery heal percentage back?

[@rewatechnology2008]

Try this one, it can help you repair true tone Repair tools: REFOX RP30 True Tone Restore Programmer: shop.rewa.tech/detail/refox-rp30-restore-programmer-for-iphone.html

[@rewatechnology2008]

Let us know which solution do you want to know more ? Solution with tag-on flex, no welding battery or the bug exploit solution.

[@emmanuelvalmas5648]

What do you mean no welding solution? If the BMS is not transferred, then cannot do anything. So how can you transfer the BMS with no spot welding? And what is the "bug exploit solution"? Does not need the BMS at all? The "bug" is only exploited for a specific IOS version? What happens after?

[@VladislavBaglai]

@@emmanuelvalmas5648I assume “bug exploit solution” means using something like OSS W09 Pro programmer

[@irescatecolombia]

@@emmanuelvalmas5648 X2

[@chordswardfelicia4475]

Good job Rewa, I saw a lot videos on KZbin that battery is no needing welding more , just replace the BMS to the new battery. How easy repair can be more 😃👍👌

[@bradleymcguire7046]

Explain Bug Exploit

[@matthewJamesKendell]

When calibrating a battery using a JC Programmer, you can set the battery health and cycle count to any number you want (e.g If I replaced my phone battery with a genuine apple battery from another iphone that I knew had a battery health of 94% and Cycle count 350, I would programme the new battery with these numbers after BMS transfer and the the health in settings would show 94%. But regardless of how I programme the tag on flex, Flashing the iphone with 3u tools always sets the health to 100%. Is there a way to flash the phone so shows the battery health and cycle count I put in?

[@rewatechnology2008]

Yes, JC programmer can customize battery health and cycle data

[@BalkansWay]

Strange thing happened: just did 12 mini battery replacement and i had no need to restore the iPhone to get correct battery health . Guess this affects only 14-15 series? I updated the phone to 17.4 prior to the repair so i can see how it is

[@rewatechnology2008]

If your iphone 12 Mini already used toools to modify the battery healthy data, the iphone will not recive Apple message

[@mrsemifixit]

An “update” to retain data won’t work?

[@AdhityaHidayat]

Technicians are not responsible for your personal data, because it's privacy, so don't store pen data.

[@matt-jz1uo]

it might work but just to be safe its recommended to back up your data, bcs my friend once accidentally erased customer data although he choose the "retain data" option ☺️

[@rewatechnology2008]

It's better to back up data before the flahsing, just in case.

[@ServiceIphoneZoneCluj]

iphone 12 pro max does not work on os 17.4.1

[@matthewJamesKendell]

Apple have re-released a new version of ios 17.6.1 and flashing does not work

[@rewatechnology2008]

Thank you for the comment, when IOS 18 is officially posted, we will test it again.

[@linustech0464]

What could be the course of front camera portrait not working? Please I need solution😢

[@rewatechnology2008]

Hello, could you please provide more detailed information?

[@frenchanndegras3101]

More like a truedepth sensor problem

[@lukasgrunewald7116]

can you update securely to ios 17.4.1 via iphone update or will this reset the battery health again?

[@rewatechnology2008]

The 3 solution came out with various result regarding of stability, pls stay tuned for the next video

[@Your_Daily_Clip]

You never showed what to do if service battery message pop up after phone resets because of battery failure. Even if you change and program with tag new battery the message is shown with 100% battery health. So there is 2 service messages: 1. Under 80% battery health and it’s fixed by tag on flex and programming. 2. Phone crashed due to unstable battery voltage - service always shown Can you please make a video about it? Everywhere is silence about that.

[@rewatechnology2008]

Hi, thanks for your comment, you will discuss more and find out the possibility for this solution within the team

[@Your_Daily_Clip]

@@rewatechnology2008 iPhone has exprienced an unexpected shutdown because was unable to deliver the necessary peak power. After that service message will be shown and even when u replace battery and change to 100% battery health service message will be displayed.

[@Daniyo27]

1. Can the tag-on flex be removed after 3utools restore with battery fix option? 2. If the tag-on flex is removed after 3utools restore, would the battery health revert back to normal if the phone was restored via iTunes after? 3. Is iOS 17.3.1 affected? Thanks!

[@lamarpots]

if you disconnect the tag on flex, even after restoration, the iphone will display the old battery health!

[@rewatechnology2008]

For 1st and 2nd question, we suggest you keep the tag-on-flex as long as it does not make defference to repair. For 3rd question, now usually IOS 17.4 will lead to this problem, IOS 17.3.1 should be OK

[@Levi1osa.]

Hi REWA, iOS 17.5.1 is gone and now flashing to 17.6 won't fix battery health. Any solutions? 😭 Edit: Reprogramming again and flashing again to 17.6 fixed the battery health :)

[@rewatechnology2008]

Thank you for the update, when IOS 18 we will also update and may post a full video to talk about it.

[@ramaaxsa1854]

​@@rewatechnology2008What is the method on iOS 18? I am dizzy

[@rewatechnology2008]

@@ramaaxsa1854 For the battery part now we are also testing

[@kklimoo]

​@@rewatechnology2008 i have found one method : flssh ios 18.. on 6% you get error then itunes - and restore...took a lot of time make one phone 😢😢

[@onkelklaujo]

Does this still work on iOS 17.5.1 devices?

[@saminchoudhury2659]

did you get an answer?

[@antoniofernandes5072]

@@saminchoudhury2659 dont work anymore

[@willian4428]

wow awesome.

[@mariano.carniel]

Same in 17.4.1??

[@젊은부자k]

17.4 Where can I download the firmware?

[@ja11642]

ipsw site

[@rewatechnology2008]

Let's download 3UTools~

[@Sarzlds]

17.4.1 didn't work

[@rewatechnology2008]

Thanks for your comment, we will keep an eye on new solution

[@cheruzain7361]

Anyone on iOS 17.5 Beta, does this affect ?

[@riain8076]

Hi, Where do you get the software to flash the iPhone? I change the battery in my iPhone 12 and it’s still showing the old battery health. Thank you.

[@rewatechnology2008]

Generally some people may use 3u tool, it can also help you flash your phone

[@alexigeek]

Work for 12 Pro Max ?

[@rewatechnology2008]

yes, same for 12 pro max

[@KoSLoW27]

I’m on 17.4 and i don’t have same info as you at 0:20 i don’t have cycle count i have exactly like 17.3.1 🧐 edit: ok only iphone 15 models … i use 14 pro max 😒

[@rewatechnology2008]

Yes. The battery health display of the 15 series has changed, while the previous series of iPhone remains the same as before.

[@JulianSauco]

Did anyone try this with iOS 18?

[@kalev258]

Battery, Rear Camera and display it's frustrating all these policies 🤦🏻‍♂️👎🏼

[@lansiman]

for something that's bound to degrade overtime apple certainly made life very difficult for everybody other than paying apple very high battery cost, for old device its simply not worth it (but that's the intention of apple to make you buy their new phone)

[@jisan004]

❤

[@Microbot_Manju]

Apple sucks.. android rocks.. being serviceman