TL;DR: I think specifying an EARFCN of 10220 in the cell lock for an MC888 causes it to lock up on power up if the SIM is present, and you have to factory reset to fix this. This is with firmware BD_H3GUKMC888V1.0.0B02. The unit is supposedly unlocked but I haven't been able to test that.
I've been having some trouble with my new SMARTY 5G - it worked great for the first couple of days, then downgraded to *really* slow 4G (<2Mbit/s download), so I started playing around with band and cell locking. I have been able to get decent 5G speeds with cell locking, though I'd like to see the "default" connection start working on 5G again - no idea if it's the router or Three as I have no other 5G device to test with.
Anyway I was playing around with some different cell locks and I put in an EARFCN of 10220 (band 32), because why not? I actually knew that this was a downlink only band (according to Mast Database anyway) and thus probably not sensible to specify for the cell lock, but I thought I'd try anyway. Normally I just get limited service/red network light when I use a bad PCI/EARFCN combination. I clicked apply and then restart and the router restarted, the power light came on for a few seconds and then all the lights went off including the power light and I couldn't connect to the web GUI either.
I tried physically disconnecting the power cord and reconnecting it and it did the same thing - white power light for a few seconds, then apparently dead.
I took the SIM out and it would then start up and let me into the web GUI, but I couldn't alter the cell lock as the network debug screen wouldn't come up without a SIM. I tried inserting the SIM while the router was powered on but it did the same "all lights go out" thing.
I was able to fix this by restarting without the SIM and doing a factory reset from the web GUI, but it was squeaky bum time there for a while.
I have not tried to reproduce this, but I thought it might be of interest. No responsibility taken if you brick your device experimenting with t
Hi there, i can help you with the unlock.
I havent tried this myself but on another forum it was suggested when this happens try taking the sim card out and start it up a couple of times without the sim then re insert the sim and try a reset this seems to work for someHi guys. Like someone else this thread. I’ve cell locked to B32 with MC888. Can’t reset it. Turns off about 10 seconds after turning on. Is this dead for ever?
Thanks man. I will try this and get back to you. Doesn’t matter how insignificant the info may seem every little helps. Wife is furious because the rest of the house is now without internet so I am a desperate manI havent tried this myself but on another forum it was suggested when this happens try taking the sim card out and start it up a couple of times without the sim then re insert the sim and try a reset this seems to work for some
Yeah no joy.Thanks man. I will try this and get back to you. Doesn’t matter how insignificant the info may seem every little helps. Wife is furious because the rest of the house is now without internet so I am a desperate man![]()
Have you tried the Miono Javascript hack?Hi Steve thanks for the suggestion mate, your original post is what brought me here! I have tried another sim, but yeah I’m not really sure if I have hard reset it or not because there is no clear set guide, I’ve sort of held for 10 seconds here and there so I will give a few more ways a go. Just bizarre that it would work for you but monumentally destroy mine! so I must be doing it wrong. I’ll keep you posted.
It’s funny you should say that as It was this script I used to cell lock and the reason I’m in this messHave you tried the Miono Javascript hack?
Lol, okay then. I think you can manually specify the bands you want. Did you try this? Just specify all the bands you need and save. Router modem should re-initialise and hopefully this could work.It’s funny you should say that as It was this script I used to cell lock and the reason I’m in this mess![]()
Hi bud, yeah was aware, but as I’d got used to using the hack it was easier changing that way. But no the router is now in ZTE download mode so does not boot. Therefore no admin console I can’t connect or communicate with the device at all. I’ve taken it apart now and shorted the test points so that it is now in 9008 mode but now I need to find the software to reflash the device which I can’t seem to get anywhere. Pretty much a dead end at this point.Lol, okay then. I think you can manually specify the bands you want. Did you try this? Just specify all the bands you need and save. Router modem should re-initialise and hopefully this could work.
Message stich96, perhaps he could help.Hi bud, yeah was aware, but as I’d got used to using the hack it was easier changing that way. But no the router is now in ZTE download mode so does not boot. Therefore no admin console I can’t connect or communicate with the device at all. I’ve taken it apart now and shorted the test points so that it is now in 9008 mode but now I need to find the software to reflash the device which I can’t seem to get anywhere. Pretty much a dead end at this point.