Year 1996: Ericsson GH388 Teardown & Service Mode

[@tiagoarno780]

Genius!! Never imagined someone in 2020’s could still do this.

[@tritonmole]

Janus is obviously a genius, but i remember few months ago having lots of fun mapping all key combinations and determining bitrate of an old TV remote using arduino and IR diode to make myself a little RGB LED string remote.

[@thedave7760]

@@tritonmole I sent my first ever email on a Psion 5 via infra red modem on one of these (I think it was a GH888) over 3g back in 98, it would normally work after a few tries and long waits not sure what the bit rate was over infra red but probably close to the 3G speeds. I used to check once a day for about a month or 2 I thought mobile email was going to be useful to me it wasn't at the time I was seriously wrong

[@ostrovskiartur]

I still have se k750

[@ostrovskiartur]

​@@thedave7760prison?

[@thedave7760]

@@ostrovskiartur 1999 felt way less like a prison than 2024.

[@dorpspeed82]

I think it's pretty freaking sweet that you're using a *Sony* tablet (of all things!) to connect to an old *Ericsson* phone...

[@MakeTechPtyLtd]

That serial cable to tablet is really cool.

[@Budgiebrain994]

This video is outstandingly crisper than previous ones.

[@janpucalik1996]

Ja P

[@reji1rajan]

I still remember when I started repairing cellphones these are the phones I worked most

[@CaseTheCorvetteMan]

I had this exact phone, 2 different sized batteries, and i had a long range antenna with a whip at the top, all Genuine Ericsson stuff, back when that was a damn good brand. It was never as good as my Nokia 2110, which i still do have (also had a Technophone 2110 for a while!!) these were all exceptional phones, that Nokia 2110 would work well outside the Optus digital map range back in the 90s!! Remember the 2110e and 2110i ?? I'd love to see you do something with one of those, it has been decades since my original 2110 has worked. The next one i had was a Nokia 3810(?) It had the nick name "the small phone with the big display" Similar phone to the one used in Matrix, but without the slide plate.

[@JanusCycle]

You had a Technophone branded 2110? Was it the same functions with GSM and everything? I do have an original Nokia 2110i. I would like to make a video when I find out more of it's story.

[@CaseTheCorvetteMan]

@@JanusCycle i did have a Technophone 2110 yes, it seemed to function identically to a Nokia 2110, i can't recall any difference. I will have to look at the old one i have and see which one it is, think it's a 2110 plain. Pretty sure i sold the 2110i wayyyy back.

[@JanusCycle]

@@CaseTheCorvetteMan I don't know if I have a 2110 or 2110i, they look so similar and I'll have to dig it out to check. The 2110e has a noticeably different style though. As I recall these Nokias didn't have a clock. Something Ericsson did have at the time :)

[@CaseTheCorvetteMan]

@@JanusCycle yes the 2110e was visually quite different. The 2110i was visually almost the same, but had the antenna from the 2110e. The keypad layout was different in terms of the alpha locations, the e and the i had them in alphabetical order, where the plain didn't. The one i have is a plain, the battery is buggered and has been for many years. I had that phone repaired by Mobile Phone Solutions in Maroochydore back in the 90s, still has their sticker on it!

[@edwardfletcher7790]

I loved my GH398, I modded it into an AH238 flip Case 👍

[@JanusCycle]

Some nice customization there.

[@thecriss88]

Where did you find all this stuff? Google literally forgot all the internet content older than 5 years or so. I tried googling a part of this payload from 7:31 but no result either.

[@davidb.9940]

It is said that the Internet never forgets anything. It's a shame if all the old information is lost! 😢

[@andrasszabo7386]

How on Earth do these charge? I have a car charger for this that connects to the bottom but the LED or the LCD does not indicate that it is charging. Only when it is powered on. And no LED charge signal when powered on, either. In the original box, when I opened it, there was a 2nd battery and an external charger for the battery only.

[@JanusCycle]

I'm not really sure, I only used external battery charging for this.

[@NicolasBahamondes]

Sony with an Ericsson. You get it?

[@JanusCycle]

Yep, they work well together. Almost like they . . .

[@howmuch368]

in 9.31 How can I know Power up+..... in another Ericsson model eg. ga628 or GH337 .. Thanks.

[@JanusCycle]

I also made a GH337 video. I'm not sure exactly what you mean by Power up+

[@howmuch368]

@@JanusCycle I mean when power on and press ob. But now I try to see this clip again ,I understand for that .thanks

[@JanusCycle]

@@howmuch368 I'm glad it's working. Let me know if you need any help.

[@howmuch368]

@@JanusCycle Thank you

[@mertdogan6601]

can i say imei with what you do

[@JanusCycle]

There is an IMEI command called LIME. However I've never tried, and those who have attempted to use it have disabled their phones. "LIME - Learn IMEI. WARNING! There are rumors that this will disable the phone!" www.angelfire.com/realm/ofclone/ericsson/gh388cable.html

[@mertdogan6601]

@@JanusCycle I have 337 imei cloned I want to throw this new imei

[@alexandrufloricica1435]

Can you please provide pinout for this?

[@JanusCycle]

Pin 8 is ground, pin 11 Rx data, pin 12 Tx data, connect pin 9 (test mode) to pin 6 (+5 volts out) to activate test mode. old.pinouts.ru/CellularPhones-A-N/ericsson_218_318_337_388_pinout.shtml

[@alexandrufloricica1435]

@@JanusCycle managed to do a gh337 with your method. For gh337 the memory zones are different but i found them. Can you share a documentation link with models/zones to rewrite for security code and network unlock please? Thanks in advance 🙂

[@JanusCycle]

@@alexandrufloricica1435 Here are the user lock locations for both models. I need to find the network unlock location. forum.gsmhosting.com/vbb/f30/how-putting-old-ericsson-test-mode-read-14611/

[@JanusCycle]

@@alexandrufloricica1435 Maybe this can help you with the GH388, the full eeprom memory map :) drive.google.com/file/d/1fW-nfJ757G402iDiwBP0yReDFBr_-P-f/view

[@alexandrufloricica1435]

@@JanusCycle thank you! do you have this information for gh688 also?

[@mertdogan6601]

which usb ttl should i use

[@JanusCycle]

They should all work fine if you have the correct driver and a good terminal program.

[@mertdogan6601]

@@JanusCycle Which pin is the 5 volt input

[@cukurovaa]

hello please help, how to change the IMEI to this phone and especially to the Ericsson 688 model, which device is required to do this and which program is required and where it is sold I do not have any information on the internet.

[@JanusCycle]

I’ve never tried, because I’ve never needed this and it’s illegal here. But here is some software for Ericsson. I don’t know if this helps. ericssoners.wordpress.com/2012/10/20/unlockflash-software/

[@cukurovaa]

@@JanusCycle hello you would write to me

[@cukurovaa]

hello you would write to me

[@cukurovaa]

hello you would write to me