yashsingh1/xdaforums huggingface dataset:
[Thinkpad Tablet General] Hemphiz:
[MENTION=849984]OrBy[/MENTION] try this boot.img. Even though it's dated different, it's the last clean backup I made before taking the Oreo OTA
[Thinkpad Tablet General] OrBy:
[MENTION=6939319]Hemphiz[/MENTION] Wow - that was quick! Thanks :)

But the bad news it even though it flashed without issue - booting still resulted in a hang.

Reinstalled Magisk and boom - all happy again :confused:

Something else must have been changed aside from boot then and that's causing the mess up...

I know when installing Magisk it logs about touching /vendor as well - wondering if something in their got touched and was not restored correctly.

Do you have a pre 8.1 backup of vendor handy? (is that even safe to touch???)

If not I may have to bite it and QFIL/EDL this thing already... :(
[Thinkpad Tablet General] wssfisio:
Interf sist stopped

After update i got a interf sist stopped each time i connect tablet to charger. I downgraded using the rom on Rússia fórum and got update again but the error persist. Now I just can CHARGE my tablet with it shutdown. Can anyone help me with this error?
[Thinkpad Tablet General] Hemphiz:
Thats weird. I literally restored that boot then Mounted system as read only in twrp then took OTA and all went well. (sorta) I had to reflash the OTA from my SD card. But anyways. I think I may have a system.img backup up on my HDD but it's occupied via the Mrs so I can't check till later, but definitely check here, Its flashable zip prior to Oreo then take the OTA's? https://xdaforums.com/showpost.php?p=76652174&postcount=122
[Thinkpad Tablet General] OrBy:
No clue why this is being such a pain.

Just finished downloading and tossing the QFIL onto a USB key, just gonna bite it and restore it when I go home in an hr - not gonna install that mi/qualicom software on my work box - I have a burner PC for that kinda thing...

Thx for the help - will let ya know how it turns out.
[Thinkpad Tablet General] Hemphiz:
Ok mate. All the best. This tablet has been a pain in the ass since the get go
[Thinkpad Tablet General] skttrbrain:
So it only charges with the tablet entirely turned off? Did you try a totally clean downgrade?
[Thinkpad Tablet General] wssfisio:
Yes i did a total clean downgrade using the rom everyone its using to rollback to android nougat. Dunno how to solve it.
[Thinkpad Tablet General] skttrbrain:
If you did a totally clean flash using the correct ROM then I would RMA it at that point. It can only be a hardware problem.
[Thinkpad Tablet General] GatuRatz:
Hi,

does autofill work for you on Oreo on this tablet?

I do not have even the option inside the settings menus...

Br

GatuRatz
[Thinkpad Tablet General] jsgraphicart:
Hey everyone. I'm thinking of getting the Tab 4 10 to replace my old Nexus 10. Since there is no official thread for these tablets and the tab 4 8 is basically just a smaller version of the tab 4 10, I thought I'd jump in and ask some questions.

First off, how is this tablet? From what I see from videos, it actually runs pretty quick and smooth and has been updated to Oreo. Second, how is the root process? It looks like Oreo has caused some root issues. Is that the case? Third, is it safe t say that development is pretty slim around here? I don't see any custom ROMs for these devices. But again there is no thread for this device so there may be somewhere. And fourth, I was debating on wether to get this or the new Smart Tab that Lenovo just announced. It seems like an update to the Tab 4 10. But not a huge one. For instance I didn't see it having an SD Card slot and the only big update was an Alexa dock (which I don't care for). Thoughts on that?

Regardless, I'll most likely be getting the Tab 4 10. My Nexus 10 has been slowing down to where it's not all that fun to use anymore. I just want something stable now.
[Thinkpad Tablet General] dahawthorne:
My experience with the Tab 4 Plus 8-inch has been mixed. The hardware is nice. The HD screen is very good. The stereo speakers are of good volume, but are very directional - tilting the tablet only a few degrees changes the stereo effect significantly. The battery doesn't (subjectively) last super-long. Compared to my Nexus 10 in its young days, it's not even close - now the N10 is, I agree, quite slow, even with a new battery, but still gives a better audio-visual experience.

There are many reports of SD corruption. I fitted a 256GB card and have had no problems in eight months.

The reason that I wouldn't buy another Lenovo product is the software. They offered a single upgrade from Nougat to Oreo well over an entire year after Oreo was released, and I'm guessing that this newish tablet is already at end-of-life. My N10 is running Pie, but, as you say, there is no such development happening for these devices.

The root process wasn't as simple as with Nexus devices - registering on the Lenovo website, getting an unlock code, etc. - but it worked. It upgraded via OTA from its original Nougat to (IIRC) Oreo 8 (800MB download) and then 8.1 (1600MB), and there it will no doubt stay, since Lenovo seem to have written it off.

Overall, a nice little tablet if you're happy with the static software - possibilities of tinkering are severely limited.
[Thinkpad Tablet General] jsgraphicart:
I had Pie on my N10 as well. But it's not perfect. I ended up going back to Oreo which also isn't without some bugs. I figured this tablet wouldn't be seeing very many updates, if at all. But I figured at least it has an official Oreo build. And if it can be rooted, I think I can live with that. I read about the SD card issues. And I see it's mostly in how the card is formatted. Fat32 seems to have no issues and that format is fine with me. At this point, I just want a tablet that runs well with no bugs. There aren't many 10 inch tablets around at this price. This was the best I could find. Thanks for the feedback.
[Thinkpad Tablet General] mad4some:
Anyone try using a precision stylus pen with these tablets??? Does the screen support such devices, or perhaps you need a certain app for it to work?? Thanks
[Thinkpad Tablet General] 5294aqib:
Don't know what is precision stylus pen.

But this tab doesn't support pressure stylus pen like s-pen etc

Universal stylus which are available in the market works but very bad experience.....

Overall,this tab is not compatible with stylus.

Hope this solves your doubt
[Thinkpad Tablet General] 5294aqib:
New update available

New update for Lenovo tab 4 8 plus available in India.

Size: 460 mb.

Reason: bug fixes and stability

Big Reason for Update: Enhanced 4G LTE mode is back!!!!!

Enjoy volte calling again!
[Thinkpad Tablet General] koboltzz:
Soo... I've read the last 20 pages in this thread and I'm still unsure:

1. If I'm running rooted nougat on TB-8704F via temporarily using twrp, I just need to restore boot and system partition (untouched backup created by twrp) to get oreo OTA while keeping my data, right?

2. Has anyone achieved to root oreo on TB-8704F and how?

3. Does our twrp-3.2.3-0-tb_8704x.img work on oreo (flashing zips)?
[Thinkpad Tablet General] mad4some:
If you read the last 10 or so pages of this thread...... https://xdaforums.com/thinkpad-tablet/general/twrp-root-tab-4-plus-tb-x704l-f-tb-t3664407

you will have your answers. Cheers
[Thinkpad Tablet General] glassop:
has the sd card corruption issue gone with the oreo update?
[Thinkpad Tablet General] 5294aqib:
I never faced it! Using Oreo

I am using sandisk 64gb sdcard since last 6 months and also i am using it as an internal storage (not as sdcard)...

Till now i have not faced a single issue :cool:
[Thinkpad Tablet General] dahawthorne:
I've been using a 256GB card since I bought the tablet maybe nine months ago (I have since upgraded to Oreo) and it's absolutely fine.
[Thinkpad Tablet General] yener90:
Could one of you guys please upload 8 plus oreo system backup? Target is bringing 10 plus on oreo.
[Thinkpad Tablet General] icanttinkofaname:
I just noticed this update (TB-8704X_S001022_190219_ROW) for my TB-8704X too. I installed it today (I'm 100% stock) and while it fixed the bug of my cover not turning the screen on when I open it, it has now made my Wi-Fi completely inoperable. I can find networks and connect to them just fine, but there is zero data coming through. I can't open play store, chrome, netflix, nothing! I even tried a factory reset of my device to see if that fixed it, but alas no, it hasn't fixed the issue. What can I do to fix this?!

Can I roll the update back? HELP PLEASE?!

EDIT: false alarm. turns out it was something to do with my router. Weirdly it was only affecting the wifi on my tablet, and not any other devices. After some time it cleared up and is working fine again. It looks like i factory reset the thing for nothing! Oh well.
[Thinkpad Tablet General] everb00b:
Debating myself...

staying on 7.1.1 or upgrade to 8.1, what do you think guys?

battery, features, BT \ WIFI?
[Thinkpad Tablet General] dahawthorne:
Personally I find few differences between versions, even major version leaps. Maybe I'm just not that observant... :)

I got the OTA (you can see the struggles I had to unroot my device earlier in the thread to allow it to happen) and as I recall it took two OTAs to complete the job. From (my bad) memory, there was a large 1GB OTA to 8.0 and then a huge 1.6GB OTA for 8.1. Both were long but painless and worked fine.

I don't use my tablet much, since I have a good phone, so the major drain over the 6 days since full charge according to Battery Bot Pro is System (28%), Apps (9%), Tablet idle (8%), and I'm now on 51% battery. I don't have any problem with that - maybe if I turned off wifi and VPN the figures would be better.

I guess another more important consideration is security, since newer versions are supposed to be more secure.

I upgraded just because I like the most modern software, though Oreo 8.1 is hardly cutting edge. Still, there will undoubtedly be no further updates to this device, and XDA developers aren't working on any custom ROMs, so I'm stuck with it.

Over to you... :)
[Thinkpad Tablet General] everb00b:
tbh,

I upgraded before and i found Oreo to be a major step back in UX.

BT not working correctly, bandwidth issues oppose to 7.1.1 which worked excellent.

WIFI is a bit weird sometimes works perfect and sometimes slow, although my phone works perfect at the same time.

auto brightness issues on apps.

if you set the brightness to low - some apps gives you a black screen and the touch won't respond.

Lenovo is a crappy company, retrospectively i would've gone for the MiPad.
[Thinkpad Tablet General] dahawthorne:
So why did you ask if you had already tried it? Seems like a waste of time for both of us, no?
[Thinkpad Tablet General] everb00b:
I did that few months ago then returned to Nouget.

Now I'm asking if anything changed or new updates, if it worth updating again
[Thinkpad Tablet General] dahawthorne:
Seriously?
[Thinkpad Tablet General] Surya1998:
Fast charging?

Hey guys I fiddled with chargers as my stock one was not working, I found out that the latest OTA added Fastcharge support to the Rom but not obviously..

I used a quick charger and it charged blazingly fast with the tag that said *"Rapidly charging" and battery icon became blue..

I made a video on it.. guys please watch it, try it on your tabs and comment [YOUTUBE]https://youtu.be/PJwmg0l8gaQ[/YOUTUBE]

And also post your screenshots of ampere app..!!

Thank you!!
[Thinkpad Tablet General] everb00b:
Which ota?

Date please
[Thinkpad Tablet General] kc12:
Update 8704x_s001025_190606_ROW

I've been using 8.1 with root since it's release. I just noticed an update. so I'll install it and see what's new...
[Thinkpad Tablet General] Ja_som:
OMG, I was thinking we are done with updates, this is surprising.
[Thinkpad Tablet General] kc12:
Completed in the Lenovo matrix only means we're not getting Pie. But we can get Oreo updates.

---------- Post added at 06:15 PM ---------- Previous post was at 06:12 PM ----------

The update is security update April, 5, 2019. I don't know what else yet..
[Thinkpad Tablet General] everb00b:
[MENTION=5201515]Ja_som[/MENTION]

how's the battery life?

if you use netflix screen still goes black at the start?
[Thinkpad Tablet General] Ja_som:
Good, I think. You mean compared to what? No, I don't use Netflix.

---------- Post added at 02:43 PM ---------- Previous post was at 02:36 PM ----------

I understand, but the 10 plus even didn't get the Oreo update, so I was thinking that we got Oreo and we are done. Also April update in July is little bit stupid, and 450 MB bit too much.
[Thinkpad Tablet General] Acel337:
Having issues with two apps: Rotation app not working with YouTube and Adaway freezes when building host files, forced to used power button to restart tablet.

Everything else is working.

Thanks for supporting this tablet model.

Reference to https://xdaforums.com/thinkpad-tablet/development/rom-lineageos-14-1-lenovo-tab4-8-plus-t3948223
[Thinkpad Tablet General] everb00b:
Compared to the 7.1.1
[Thinkpad Tablet General] Ja_som:
I really don't remember, it is few months since I upgraded to Oreo, update was in November or so.
[Thinkpad Tablet General] kc12:
Yes, when casting Netflix, the screen goes black for a few seconds then loads and works properly. Same with LOS 14.
[Thinkpad Tablet General] Nickterion:
You guys should really go check out the lineage os for this device. It's pie and has no bugs other than a few notification light problems
[Thinkpad Tablet General] dahawthorne:
I see no such LineageOS Pie version.
[Thinkpad Tablet General] davk50:
Lineageos

[Qhttps://xdaforums.com/thinkpad-tablet/development/rom-lineageos-16-0-lenovo-tab4-8-plus-t3950430UOTE=dahawthorne;80033726]I see no such LineageOS Pie version.[/QUOTE]
[Thinkpad Tablet General] drizzle123:
Do you have the source for this posted anywhere?
[Thinkpad Tablet General] dywersant:
Just open the zip and edit it.
[Thinkpad Tablet General] mrlobaloba:
Can you please let me know how you rooted 8.1 , the other threads are saying its not possible on 8.1 and advised me to downgrade to 7 instead, please help.
[Thinkpad Tablet General] dahawthorne:
I've moved to LineageOS Pie, but I had Magisk 19.3 installed without problems on 8.1 - as others have also stated in this thread.
[Thinkpad Tablet General] kc12:
It wasn't obtaining root that's difficult - for me anyway. It was getting r/w to mount. I finally got it by unzipping the remount.zip and running the script in TWRP terminal. But there is an updated remount zip now. So that should work. It's here

https://xdaforums.com/showpost.php?p=77781453&postcount=1014
[Thinkpad Tablet General] blazerblazer:
I have upgraded to TB-8704X_S001025_190606_ROW.

I found that there is a battery problem.

I fully charged the tab and then switch it off. The battery run out after 1 day only.

It seems the firmware have bugs. However, Lenovo could not provide a previous version to me. Really bad.
[Thinkpad Tablet General] 5294aqib:
Lineage os (android pie) has otg detection issue.....

My tab not detecting otg devices therefore downgraded to aNdroid 7.x(stock)

And its working perfectly in stock android 7.xx
[Thinkpad Tablet General] drizzle123:
maybe device tree or init script that needs to be updated on the pie rom - does otg work on other lineage pie roms?
[Thinkpad Tablet General] 5294aqib:
Haven't tried other lineage pie roms :cyclops:
[Thinkpad Tablet General] 5294aqib:
Goodix Gt9110L touch ic Lenovo tb-8704x

My tab(8704x) digitiser is not working from upper side..

The ic used is Gt9110L from Goodix.. if I changed the ic will it work?

Waiting for the reply
[Thinkpad Tablet General] dape16:
How is charging speed on the Lenovo Tab 4 8 Plus? Anyone tried different ROMs and chargers?

I would be very thankful if anyone could answer if it is charging or discharging if you use it with the charger plugged in?

With an average brightness and common tasks like browsing, listening to music etc.
[Thinkpad Tablet General] tmihai20:
[MENTION=315511]dape16[/MENTION]: try not to stress any device by using it while it being charged, with or without fast charging enabled. It will stress the battery to the point where fast charge will not work anymore or charging will be slow. I read about it a lot from people asking if we have charging issues (while they used to play or do stuff on their devices while charging).
[Thinkpad Tablet General] Seamonkey79:
I downloaded it and took a look at it, looks like it's a build for the Samsung Galaxy S5 Snapdragon variant. Not much help (well, none) for the Lenovo Tab 4s :(
[Thinkpad Tablet General] ruggiex:
Seems like Lenovo Released the source for US Verizon variant (TB-8704V)... Hopefully others will come soon or it can be used for 8704F/X? I really am tempted to import the 4/64G version of the tablet to replace N7.
[Thinkpad Tablet General] wonderfulme:
Can confirm after using it quite a bit since August it is indeed a great N7 2013 replacement.

Tends to be on a heavier side though with the official Lenovo case.

Otherwise, great news ref the source release. Only thing I'm really missing is Lineage OS. Hopefully someone will pick up development.
[Thinkpad Tablet General] nigelhealy:
I have had the Tab 4 8 Plus 4GB 64GB Wifi TB-8704F variant for a few days and like others it is to replace my aging N7 2013. I put a 128GB SD in and I like it. In my case its for when I'm flying to use in-seat with lots of media stored internally and when on holiday when dont need a laptop.

I would like to unlock and Magisk to better adblock but lack of flashable images makes me very nervous about bricking it.

I was very nervous here in USA having to buy the higher spec version from China, but reviews of the USA shipping 2GB model suggested memory too low as was stuttering so wanted 4GB, it took about 2 weeks and was in no-mans-land type for days. Very odd, given we can buy from China easily enough, that Lenovo chose to not release all the models in USA.

I didn't get the official case, another one its not delivered yet. Probably will get a wide BT keyboard to make my very-lightweight laptop for travel.

The only obvious downside I have found is the 5V 2A 10W USB-C recharge is really an overnight affair, its about 1% every 2 mins so its not like you can use it til flat and plug in. I metered it is and it does indeed ingest at 5V 2A 10W. I see the specs have a 4850 mAh which I assume around 3.7V makes it 18Wh so it is a puzzle why needs so many hours to recharge it should be about 3 hours but for some reason its not, possibly I need to look at my charger.
[Thinkpad Tablet General] corona_gorda:
Love my Lenovo tab4 8 plus but spotty Wi-Fi anyone??

I seem to have a bad wi-fi reception on this new tablet while no other devices in my home experience similar wi-fi patchy connection. YouTube spins on end, some games just never come online, news refreshes slowly and I do see an empty Wi-Fi icon which comes back online after 10 seconds or so. Anyone else have this problem ?

Thanks,,

Mike
[Thinkpad Tablet General] nigelhealy:
The best Wifi I get is on my N7 2013, this Tab 4 8 Plus seems ok, not that bad as you describe, but better than say my OnePlus3T or my Pixel C.

You could have a dud unit.

---------- Post added at 06:58 PM ---------- Previous post was at 06:50 PM ----------

FYI I got Magisk so root just fine, worked first time following this guide. As there are no stock images you have to give a seriously sustained effort to copy your TWRP backup to lots of places, I got mine on 2 SD and a hdd.

What this means you cannot once rooted simply update, you'd brick it, no you'd have to make use of a PC, boot TWRP, restore from backup, reboot then let Lenovo update, then apply Magisk again.

To get unbricking capability we really need factory images. Til then make your own via backups.
[Thinkpad Tablet General] cmvrgr:
Is the TB-8704X dual sim as the manual shows ? Does it have an earpiece for using it as a phone ?
[Thinkpad Tablet General] wonderfulme:
Yes, it is dual SIM (though I've heard reports of bad LTE and even GSM reception; never tried since it's a home pet) and yes, you can use it as a phone if needed. It's got a 3.5mm headphone jack which can be used with a mic.
[Thinkpad Tablet General] cmvrgr:
Are you sure that the top speaker is not doubling as an earpiece? Too bad if not but is the only solution in the marker if you need dualsim lte and big screen.
[Thinkpad Tablet General] wonderfulme:
I likely misunderstood you the first time; yes, I believe it does; however be advised that I did not try to use it as a phone, like at all.

If I have some time this evening I'll try to switch the SIM from my phone and try to call from the Tab. Will let you know.
[Thinkpad Tablet General] cmvrgr:
I would like to thank you.

If you can test it , it will be fantastic. I am trying many months to find a dual sim LTE tablet and use it as a smart phone replacement because I am working many hours on it and smartphones have super small screens. Having 2 devices is not easy always.

I would like to ask do you have the 3/16 version or tha 4/64 ?
[Thinkpad Tablet General] wonderfulme:
I have a 4/64, but sorry to disappoint, unless my heavy hangover is having something to do with that, the NanoSIM just won't go into Lenovo's slot. Tried every side with my clunky fingers.

Neither do I see a place for dual SIMs or anything like it, though from what I understand every tech spec on the Internet lists it as dual-SIM capable.

Here's what comes for illustrations those days: https://i.imgur.com/SGgp2Gx.jpg Hope the numbers on the SIM mean nothing and I won't be robbed of my earthly posessions through them Internets.

Again, sorry to burst the bubble; it's probably just me. I'd Youtube people talking on the Tab or Google some more. Know for a fact it's possible, just maybe not with the Nano SIM.

I've heard reports of rather unreliable mobile data with Lenovo, but obviously it depends on your location/provider. There are in fact people who managed to get it LTE speeds, just not me.
[Thinkpad Tablet General] cmvrgr:
https://youtu.be/RPemDBogFfU?t=8m40s

thats strange. can you see the video above to see that is pulling the tray slot ?
[Thinkpad Tablet General] wonderfulme:
It so happens that I'm Russian and what he's saying is, apart from "pull out the tray" (didn't see any tray) and you can either insert dual SIMS or a SIM and an SD card. Gonna try it this way, will report back.
[Thinkpad Tablet General] wonderfulme:
Okay, so surprisingly enough (for me), there is indeed an invisible tray - you totally wouldn't know it was there. So inserted my Nano SIM into one of the slots, rebooted the tablet, and, well, ta-da.

Called the wife while handling the tablet like a regular huge phone. She heard me, I heard her. From what I can tell, the speaker that doubles as a Mic is at the bottom (as expected) and the actual speaker is at the top (again, as expected). Won't vouch for the ease of use (I got smaller hands), but it certainly is possible and even feasible with a BT headset/headphones with a mic.

What bothers me though, is that my Xiaomi Mi 6 reports as LTE, while Lenovo won't go past 4G. Speedtest results are thus 19ms/26.33dl/1.40ul. Not very impressive. (On a second try I got 14mbps upload, instead of 1.4mbps. So there's that). Will post results from Xiaomi with the same server once I have the SIM back in place.

Anything else you'd like me to try while the SIM is still in Lenovo?
[Thinkpad Tablet General] cmvrgr:
That's fine. I would like to thank you again. The only think I would like to check is if the dual SIM is working but I think it will as I seen in the youtube video.

Thanks again you helped me a lot. I will try to find it from other country as in my country only the 3/16 version is available.