yashsingh1/xdaforums huggingface dataset:
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] viktor92:
Install Xposed + GravityBox and you will have the same or even more tweaks to the status bar and all the rest.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] ctl999999:
Dear Sir, Do you know if the dirty flash works on fulmics 5.5 to v30f through twrp ? Thanks
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Xkirnel99:
You have to wipe data,system,cash, then you can flash the v30f
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] vkeza057:
I'd also flash Oreo Bootloader just to be safe.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Xkirnel99:
I don't flashed it but as you see it is better to flash the oreo bootloader
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] vkeza057:
You are switching from Nougat (Fulmics) to Oreo (Stock 30f). Flashing bootloader will take 10 seconds and can save you a lot of headache.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] viktor92:
Isn't Oreo bootloader already in the COMPLETE zip ?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] vkeza057:
This is just a precaution. It will do no harm, but it can also save you form a lot of hassle and stress later.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] pt917:
Can i will flash it in LS922 variant of G5?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] viktor92:
No, only H850 and H830
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] pt917:
Thank you
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] s1k1:
hello guys, i am on 6.0 have twrp and root, can i install this room without 7.0 bootloader? If no is there way to flash 7.0 bootloader with twrp, couse its to much of flash kdz,then twrp then root. Thanks
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] totalnoob34:
There are flashable zips for complete stock or just bootloader, both for nougat and oreo.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] s1k1:
thanks, should I flasah first rom or bootloader? :D
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] viktor92:
I've flashed only the COMPLETE zip and all was perfect
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] s1k1:
oke i install , but i have another problem, camera not work, when it said its crash
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] viktor92:
Have you wiped internal memory ?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] s1k1:
Now it work after flashing bootloader, I wipes data cash syst dalvik, should I reinstall rom and wipe int storage mabye rom will run better?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] viktor92:
If you came from MM, it's better to do an internal wipe, but if all is working now, I would leave as it is
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] s1k1:
guys any advice for karnel? Should I stay on stock or some custom and which? :o
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Kloosek:
Use mk2000 kernel, is the best kernel for our devices.

Wysłane z mojego LG-H850 przy użyciu Tapatalka
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] hightech316:
What device does the mk kernel come from?

The thread states its a stock kernel .
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] BajaBlast4Life:
For those out there, this Custom Rom doesn't work with Smali Patcher. It will flash fine through Magisk and TWRP, but it always gets stuck in a bootloop when I restart the phone. I have tried different ways, and it still bootloops.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Xkirnel99:
Tried wipe cash/dalvik ??
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] BajaBlast4Life:
Even that too. I also tried other different Custom Roms, and it still bootloops with Smali Patcher. You can put Magisk in Core Only Mode, it will flash fine, but you need to turn off this Core Only Mode for Smali Patcher to work. Turn off Core Only then you get a bootloop. Tried all the fixes for this, and it still bootloops. I think LG G5 doesn't work with Smali Patcher.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Cooro:
any possibility of Oreo or Pie update in the future?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] FaNTaTehPr0:
Hi lads I need some help. Its 465 pages so I couldn't search all of em. I just installed fulmics 5.5 in my lg g5 and I cant find and set up my fingerprint...any hint?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Xkirnel99:
Go to settings> general> lock screen and security> scroll down and you will find select screen lock.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] FaNTaTehPr0:
I know that lol.there wasn't any option. However, I found the solution. I had to clean install a nougat rom with a nougat bootloader and then installing fulmics.fingerprint is ok now. thanks for your reply anyway
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Xkirnel99:
Glade to know u find a solution ??
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Raka.P:
Want To Ask

now i was on RR rom on h830, can i just wipe all after that installing this rom ?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] BajaBlast4Life:
Sigh... I bought a Datel Gotcha and it cannot maintain a bluetooth connection on this rom.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] s1k1:
Yoo i have same problem no option, wierd because few mounths ago it was i used it. So can you give me that fulmics.fingerprint install.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] boxes:
What kind of battery life are you folks seeing? Screen on time? Stock kernel or mk2000?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] dietoro:
I solved simply flashing in twrp supersu.

Then you can install magisk later after a big wipe, but the first time is better to give a super su install on recovery.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] ezzony:
Could someone tell me how to reinstall magisk. I don't know what happened but the magisk app is telling me it's not installed anymore. I did install mk2000 kernel a few days ago. Would doing this be responsible? I restored the original boot image that I had backed up using twrp hoping this would be an easy fix to get magisk working again but that didn't work. All the apps I installed using Magisk still work curious but I guess that's how it should be. Anyone if someone could explain how I can re-install magisk again easily I'd appreciate it.

Edit: reflashing magisk zip from twrp worked to bring back magisk. But I still don't know why it disappeared in the first place?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] fonejay:
Hey guys, one problem, I installed latest version threw latest twrp...rebooted and in first screen when you make security pattern it gets FC all the time cant move to any other screen no matter what, usb connection is not recgonized though (it does charge, have linux/debian OS). Also cant even come to starter recovery/download mode with buttons (have some experience in this so its very strange why it wont work) it allways passes LG logo.

Any suggestions how to get it working again, feels like Im out of options with it!?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] TheMadScientist:
As always [MENTION=5132229]xpirt[/MENTION] awesome work. Finally got me a g5 i can install this on. As always like in the past awesome Rom. Works great. Thank you your work is always appreciated here
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] LollipopLover:
I'd love to see a release for the Lg G5 SE (H840). Loved Fulmics on my G3!
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] paul_zm:
i flashed this ROM current days, but I can' t login google account, and there is a tip: google play service have been stopped, how can I fix this, I tried many methods, but all failed [MENTION=5361113]xprit[/MENTION]
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] TheMadScientist:
Did you flash it clean? I've had this happen. I'll factory reset. Flash. Then factory reset again. Normally clears it up. Also be sure your on a 7.0 base band before flashing this install one of the stock 7.0 system twrp flashable.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] paul_zm:
Yeah, I clean flashed it, and my baseband is 20a, but I unlocked network, don't know whether baseband was changed, I will look into it again.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] djbuk@pm.me:
Hi there

I know its unlikely but I wanted to make sure… Are you at any point able to make an LG G5 H850 Oreo Fulmics rom? (based on final firmware h85030f) I may even be able to help as im desperate

I really like your aroma installer at the beginning of your roms. G5 Oreo H-Rom has some good ideas ported across from the g6 such as eye comfort mode (which can be scheduled) but the rom is buggy due to kernel issues and has been abandoned. Hd recording feature and recording fm radio is also featured.

Also one of the official Oreo roms had the TV remote embedded in the top bar (where you can turn on and off wifi etc) which is very useful

Is it easy to make an aroma installer? (I have some programming knowledge but over 20 years ago)

I still use this phone as there Is none other like it (since google abandoned its upcoming modular phone project). I use it for gaming, emulation on CRT tvs (rf radio for tv remote is very useful) and many other things and with hacks its just as good as any phone today (gcam mod is great for photos)
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] ROMSG:
Nice rom super stable
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] زهرة طريلي:
جيد
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Justyouforme:
Thanks
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Hassaan Masroor:
Great ROM.

Only issue I'm facing is unable to install apk files.

It says "App not installed. The package appears to be corrupt."

Tried the core only mode in magisk as suggested by another user in thread but to no avail.

Any help would be greatly appreciated.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] yoperdi:
Is this rom even updated anymore?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] darkalexpp:
@xpirt hi, how i can port the fulmics features to Stock v21d (RS988).

I practically try to make a fulmics rom based on the official v21d (RS988)

I mainly care about porting lg ux 6 and the lg camera, sqlite3 support
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] VortexHD:
Hello, every time I try flashing this it always boots up to Encryption unsuccessful!

I have tried Formating Data and wiping it with no luck :(
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] wonzay:
I have an issue with this rom (v5.5), 4g (lte) doesn't work, there is no data (apn is right). 2g&3g works fine. Has anyone had this problem? This is "second hand" G5 so I don't know anything about lte on stock rom from lg. Maybe hardware issue? But... "network signal guru" shows lte signal, about -80dBm (frequency 900, 1800, 2600, etc).
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] abdoistheone:
activate data roaming
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] wonzay:
@abdoistheone, nope, it doesn't work for me.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] abdoistheone:
did u Try reset network settings ?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] wonzay:
What do you mean? I tried factory reset. Still no luck.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] abdoistheone:
i personally tried fulmics 5.5 many times & i never had any network problems may be it's an operator related issue becuz i was having the same problem until i consulted some sim card seller & he activated it for me so i can use 4g lte
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] wonzay:
I tried another sim card (operator). The same problem. I have seen "4g" only for while, but it never happened again. "Network signal guru" shows pretty good "lte" signal, almost the same level as in another smartphone. I don't know what is going on.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] abdoistheone:
what lg model u have exactly ?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] wonzay:
H850 (Europe).
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] abdoistheone:
ok wonzay buddy let's suppose it's a rom problem so try this :

删库跑路 - 马丁龙猪的博客

刷机的时代其实早已落幕，迟迟下不定决心只是希望能让魔趣多存续一些时间，但该来的终究会来。 马丁龙猪今天决定删库

download.mokeedev.com

and make sure u are on latest twrp which is this:

Download twrp-3.5.2_9-0-h850.img

Download page for twrp-3.5.2_9-0-h850.img

dl.twrp.me

it's rock stable & am using it as my daily rom (h830)

- format data once & reboot back to recovery

- make the necessary wipes

- install the rom

- install latest gapps for android 7.1 (https://opengapps.org/)

- root with latest magisk (https://github.com/topjohnwu/Magisk/releases/download/v23.0/Magisk-v23.0.apk)

change extension to zip

- report back to me :)
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] wonzay:
Ok, thanks, I will try, but I still wait for more stable lineage os v18.1. I prefer this branch of roms.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Happy1337:
Hey, I have a problem with a backup of this rom.

I was using this for years, but updated to lineage os18.

Made a backup with twrp

Now when i install the backup I cant get past the lock screen.

Fingerprint cant be used (not sure if i deactivated it myself)

It says "try again"

The unlock pattern is correct, but its just not working.

Seems like the rom is working fine in the background.

Any help with that ?

Or is the any other possibilty to restore an app with data ?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] HyperXG:
Hey,

Why isn't there any RS988 build?

@xpirt Please make a build for LG G5 RS988.. PLZ its a humble request.....
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] CounterbaIance:
Is it possible to upgrade this rom to 8.0?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] fairmali:
The download link is dead.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] brockyneo:
Ah right brilliant I'll flash tonight then thanks I assume it will just be a update and not a full rom?

Thanks
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] xpirt:
yes, it's an ota
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] ArmalSharefe:
[MENTION=5132229]xpirt[/MENTION] MiniView and APM are not working... Using Fulmics 1.0 ony my H850... If i can help you fixing this issue tell me what i should do... Looking forward to the ota update of 1.5 ?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] xpirt:
? there is only full rom for 1.5.

apm must be enabled in tweaks->misc tab.

miniview it's a known issue which is fixed in next ota, 1.6.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] xpirt:
​

Fulmics ROM 1.6 (February 9th)

Additions

Added tweak to choose battery icon style (hidden, stock, 3Minit)

Added quick PIN unlock option in Tweaks app

Added tweak to enable full caller picture in dialer app

Fixes

Fixed missing one hand Miniview option in settings

Fixed mismatched lockscreen Weather effects

Fixed ability to change DPI not working in Fulmics Tweaks app

Fixed SystemUI reboot not working in Fulmics Tweaks app

Fixed Google Play Services issues for some users

Settings - About - Software updates​

notes:

- thx to [MENTION=4619873]gharrington[/MENTION] for 3Minit Battery Mod and [MENTION=6170439]zStrikEz[/MENTION] for his full caller picture layout

- also thanks again to all donors who supported me and bought me some coffees :)

enjoy!

p.s: added some screens on OP too
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Nick216ohio:
In your OP, can you add list of not working currently?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] brockyneo:
Thanks for the update just downloaded now can I do a clean install of v1.5 then flash the 1.6 via recovery or am I best booting into 1.5 first then flashing the ota

Thanks
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] xpirt:
if you want to full wipe you can flash 1.5 full rom and without rebooting, in recovery, flash 1.6 manually right after.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] mkpcxxl:
[MENTION=5132229]xpirt[/MENTION]: Installed 1.6 via OTA and works like a charm.

Thank you for your work.

Best regards

mkpcxxl
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Chiko-HH:
Thx xpirt, all Works with 1.6 over Ota.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] sevsman:
Can you upload 1.6 so we can save it for a full install?

Thanks

Nathan
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] xpirt:
I rarely can upload full roms due to my internet connection..

why can't you download the full 1.5 and ota 1.6 zips and flash them one after another directly in recovery? :)
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] sevsman:
I have 1.5, but I'd like to be able to download 1.6 from here so I can do a direct upgrade without booting up and then waiting for it to download

Thanks

Nathan
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] xpirt:
the link of 1.5-1.6 ota is in 2nd post too..

(if I understood correctly)
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] sevsman:


Hey, thanks buddy, I just found it!!

Your quick responses are much appreciated mate!!

Cheers

Nathan
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Sergykm:
[MENTION=5132229]xpirt[/MENTION] you're a man! Thank you so much for your hard work. As for me your rom is the best rom for our G5 now!

Hope in the next release you will port v20 camera or add manual video for our cam amd it will be perfect rom for me)

Thanks again!
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] obol2:
V20 camera is in Fluence HD patch :)
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] onestyle007:
It is,but without manual mode, that's unmoded v20 cam there
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Sergykm:
There's camera without manual video mode, so nothing good.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] obol2:
Yes, he wants to fix it in the next update. But if you really need the manual mode then install stock rom mm + v10 camera apk.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Sergykm:
hah, thanks for the advice, but I was on MM with v10 cam long time. I waited for xposed, but without success, now time to go forward, because fulmics is a great rom and it can replace part of the functions from g4 tweaksbox and xposed.

So I decide that time to go to nougat.

I just give dear [MENTION=5132229]xpirt[/MENTION] some variants for next releases, but if he doesn't want do it no problem at all, because I like his rom and it's very stable, fast and smooth with many good features.:good:
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] akki7636:
[MENTION=5132229]xpirt[/MENTION]

Feature Request : If possible , add ability to add widgets in Smart Bulletin in future update

It is available in other 20c based rom.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] alienex:
Hi, thanks for the brilliant ROM and recent 1.6 update.

I've gone to use 3Minit Battery and a popup appears.

I'm rooted and use adaway as standard.

So I purchased 3Minit, rebooted and it still says the same, like it's not detecting my paid version??

View attachment 4036157
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] half269:
Hi, I do not know how I install this rom

Loading a first by LGUP H85020a_00_OPEN_EU_OP_1030

I am loading a recovery followed by the ADB, the entrance to recovery Loading a FulmicsROM-1.5

each time after installation fumics I have a message like the screenshot

as I have clicked the reset bootlop to recovery each time
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] sevsman:
Morning all, is there any chance that someone could try and install UC browser Fast download from play store and let me know if it fails or installs ok?

Thanks

Nathan
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] alienex:
Just done it mate installs and worked OK for me, on 1.6
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] sevsman:
That's weird as it won't install on either 1.5 or 1.6!

Maybe I'll try flashing it again later today :)

I really appreciate your help dude!!

Thanks

Nathan
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Bogdan X:
VIDEO HAS STOPPED WORKING

-randomly, after I use the phone for a while my lockscreen animation goes black, no more wallpaper on the lockscreen

-if I try to play a video in gallery app it says video has stopped working

-if I try to open weather app,where there should be some animations with the current weather effects a get the same error: video has stopped working and the background for respective app is also black too

If I`m restarting the phone everything goes to normal again.And after a random time, this error appears again..
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] f4n471c:
Just updated to 1.6. First custom ROM ever, where OTA was working.

You sir are awesome!!

Also thanks a lot for implementing the quick unlock functionality. Love it :).
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] mkpcxxl:
You have to start the 3minit settings through the icon in your home- or appscreen.

The one in the fulmics settings is the free version where you must disable adaway. If you touch there it will be always the free version.

The paid one is in your home- or appscreen.

It works, because I've had the same problem before with Marshmallow.

Regards

mkpcxxl
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] xpirt:
try contacting [MENTION=4619873]gharrington[/MENTION], he's the creator of 3minit app.

edit: seems you got a reply :)

logcat? :)
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Bogdan X:
logcat before or after error?
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] xpirt:
after I assume..
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] brockyneo:
Hi need some help just set up everything and restarted my phone problem is im stuck at my lockscreen i have a fingerprint set and a 6 digit code and also ticked auto unlock when right pin is entered but when itry enter my code it gets to the 4th diget and says wrong code and wont let me type 6 digets in i dont want to have to factory reset again is they a command i can use in twrp to reset maybe fulmics app settings as it might be the auto unlock setting

Thaks
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] xpirt:
you're right, will be fixed in next version.

in the meanwhile you can go in twrp, advanced, file manager and delete inside /data/system folder the files: *.key and locksettings* ones.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] brockyneo:
Ok thanks there is a few key and locksettings one sorry to sound stupid could you list which ones to delete

Also does this reset my password or just the fulmics app settings

Thanks again
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] xpirt:
all files with the key extension and starting with locksettings. this should remove the lockscreen password so you can set it again with 4 chars till it's fixed.
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] onestyle007:
Delete these files :

password.key

pattern.key

locksettings.db

locksettings.db-shm

locksettings.db-wal
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] brockyneo:
Ok brilliant im back in and set 4 pin instead of 6 and all is working :good:

Thanks again for your help
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] Mysteryday:
What a great Rom. I never had something better g5 on my LG. Is it still possible in the task manager to display the Free RAM memory as with Cm? Thanks for the great work
[LG G5 ROMs, Kernels, Recoveries, & Other Developme] xpirt:
fixed also for 6-digits (or more) pin.

btw the quick unlock option is meant mostly for 4-digits pins as it checks if the pin is correct after entering 4 chars. now I fixed by checking everytime you enter >=4 digits. but if you choose a 10-char pin you can understand that it will check every char you insert after the 4th, and as you know after 5 wrong insertions it will block the phone for 30 seconds.

so in conclusion, you can use it up to 8 chars but if, for example, you choose a 6-chars pin, the 4th and the 5th will be recognized wrong pins, until the 6th which is fine and it will unlock. so.. hope I was clear enough :)