are you saying you used the mini firmware on the non-mini and it worked?

this is a big risk cause u can brick your Z9 and no way to go back. i'm not sure if there is a recovery method with the sd card for the Z9?

do not reverse the fan. the temp sensor is on the far end of the board where the air exhaust out of and if you reverse the fan, cold air will hit the temp sensor first giving false cooler readings so the fan will slow down and be more quiet but your chips will be running hotter than reported in the GUI.

i know we all hate bitmain but they didn't make an asic to fail and die to get warrantied back.

count your blessings that Fedex may have not fixed this yet. the HTS code is wrong, there was ruling to change it for miners being imported. if they missed you then be happy. i know that UPS has caught up to speed on this. don't ask me how i know and how much i paid.

no can do, you will need to mess with the hardware to achieve this. bitmain has locked it down. it can be done and some have done it to achieve 20k sols but u better have a electrical engineering background or a good buddy who does and some equipment too.

if you are in the USA and bought 2 Z9s, you can pretty bet on getting the tariff. get your checkbook ready as those two miners combined are thousands of dollars that will not be unnoticed.

you got lucky. enjoy your victory. perhaps you got some leftovers from batch 1 that was thrown into the mix of batch 2. batch 3 is very iffy with some reporting perfect 750M OC while others say 500M and nothing else.

if real, well done... post a youtube video please.

i think we all need to face the reality that we're the ones that are doing this to ourselves. remember that bitmain only made the miner. we all chose to buy it and increase the difficulty on our own. everyone wants a piece and therefore pushes the difficulty up and therefore less to go around. in short, we're our own demise.

in the long run, whether it be asics or gpus, it will be a battle of attrition. the ones who can outlast the rest will win. as people turn off their gpu rigs, it increases profits for the other gpu rigs that are still on. same goes for asics as well... the question is who will give up first.

another analogy... gun manufacturers make guns. we buy guns (both good and bad people) and use the guns to hurt other people... so is it the gun manufacturers fault or is it us? i know there's a lot of variables and great depth of discussion here but the fact is that we do it to ourselves.

another scenario... market value and trading... if sellers would just hold strong on their sell books and not panic-sell, coin prices won't drop. of course buyers want to buy low but if seller won't budge, then buyer will have to meet it or the price won't move and that's okay. again, a lot of variables and depths of discussion but the fact is we do it to ourselves whether by choice or consequence.

just my opinion. take it with a grain of salt.

give it a whirl and if it works, you may discover a new market for used control boards, hehe. flash firmware and sell to Z9M owners.

+1... however i'm too lazy so i just do the F12 trick. set it and forget it.

everyone, i'm pretty sure that Bitmain has restricted the VRM (voltage regulation module) to a certain voltage so that the chips will only run so high before they crash. more than likely, batch 1 was lesser restriction, batch 2 has more, and i guess batch 3 has a lot?! my assumption is that too many people were frying their miners from unresponsible OCing (because they either had a bad chip or was poorly cooled) and then warranty-claiming them back to Bitmain. i don't think there is any way Bitmain can tell that the miners have been OC'd unless there is a hidden log somewhere. the super-strip down version of linux that runs the miner is imprinted into ROM and reloaded upon each power-up cycle; the only changes it keeps (i.e. stratum, address, frequency, etc) is saved to a config file.

anyone who has experience OCing CPUs will know that at some point you need to up the voltage to keep going... well, in the case of these Z9M chips, you can't do that so as you OC the MHz up and up, it will hit a ceiling and crash. trip the VRMs enough times and the darn thing will go into a "i don't want to play anymore, i quit" mode where it won't hash at all and you will think you have bricked your miner. if and when this happens, just power down the miner, exhaust all the power from the miner, disconnect the psu, exhaust the power from the psu, and fire it back up (or just disconnect everything cables and all and let it sit off for 15-20 minutes).

if you want to go above what Bitmain has set, you will need to have some electrical engineering background or knows somebody who does and have some equipment, like a USB-PMBus dongle tool at the minimum to regulate the voltage as well as needing to solder some connectors to certain points on the PCB itself. this is no easy task as you need to be able to read electrical schematics let alone know what the hell you're doing so you don't fry your boards on the first power-up after you mod it. FPGA-guys are already doing this as they really need to regulate voltage when they push their chips while mining. of course this isn't the only way as the direct interface to the PCB may allow modification.

also, heat is going to be an issue if you can actually accomplish what i mentioned above. just like OCing CPUs, the higher it goes, the better fan heatsink or waterblock you better have. i recommend liquid immersion but that's just me. if you disregard this, your chip will fry really quick.

either way, take what i said with a grain of salt cause i am still a noob in regards to this forum and have zero trust so what do i know, eh? just an observation, nothing personal, hehe...

i'm pretty sure at least 99% of you Z9M owners will not be attempting this and the ones who have done this will keep it to themselves and not share out. why give more hashing power to the rest to increase difficulty, right? welcome to the world we live in. happy mining!

 

yes, some have done this successfully so that they would not have to use the browser trick. keep in mind that it will not help with the OC bottleneck.



there is a reset hole button on the front of the miner. while the miner is on, use a paperclip and push in that button and hold it for at least 10-20 seconds then let it go and see if it will get an IP from your router and then start over from there.

obviously so since there are now cards available for purchase. hurry before they sell out.

my guess is that this will be the end of the Z9 mini and only the Z9 will remain with the remainder inventory plus price adjustments for next batches.

look on the bright side, as some pre-order owners drop out and request refunds, this will open up doors for people waiting in line to get a crack at owning one or a few cards. 

the situation is unfortunate however it will benefit some into the game.

as far as we know, it's still not working with high rejects and low hashrates. y not give it another go and report back?

this makes perfect sense if the hardware architecture was built like this. in this case, with the reversed airflow, the lower temp reading is fooling the control board to slow down the fan therefore cooling the 3 other chips less than required so for all we know, the 4th chip (with the sensor) is fine while the other 3 is roasting away...

what shop? do share... or did you get scammed?

without a doubt, i'm sure some people got in to flip on ebay... just watch, they will show up on ebay.