are the frequencies hardware bound or software bound??
i read that on the typhoon, depending on which rom you flashed, it will change from 900mhz to 850mhz, or vise versa. is this a possibility with the magician platform?
perhaps i should have been clear.
with the magician, we have a tri-band phone. most of them are 900/1800/1900mhz and US models have 850/1800/1900mhz.
with the typhoon, i read that the device is quadband capable, but only three bands are enabled at once. so you can get a audiovox smt5600, which has 850/1800/1900mhz, and flash a c500 rom to it and you will end up with a 900/1800/1900mhz device.
i always thought that the frequencies are dependent on hardware settings, but i guess there is more to it than that.
so what i am asking is, is it possible to get a lets say, qtek s100 and flash it with i-mate jam US version rom, than will it enable the 850mhz band and disable 900mhz band?
i didn't think this was so much a stupid questions....
enlighten me!
I remeber reading a thread on Modaco or Hofo a month ago about this issue. Try to search there and see if you can find the thread. The general result was that you can flash a 850 Rom on a 900 Magician and the 850 will work, the 900 will be disabled. There were a few posts there of members who confirmed it worked. However, because the radio part was designed for the 900 band, the slight change in frequencies can over time damage your radio and make it useless. So be carefull to try this. read the mentioned fora for more info.
As far as I am aware the 850/900 difference is in the radio hardware and cannot be changed in software.
Related
hello:
i know that this topic has been addressed, but it's not clear what the answer is:
i have a friend that bought the "b" model xda (900/1900) in the united states, and took it to brasil. he ran XDAunlock, and the sim is unlocked.
with bootloader, he told the phone to operate at 900/1800. the program
"bandswitcher" or something that's included in the xda developer's rom
indicates that the phone is at 900/1800.
but it gets no signal using sim cards in sao paolo, brasil.
many posters have indicated that they do get some connectivity,
not quite what a native 900/1800 would get, but much better than nothing.
other posters have said that it is not possible to get any signal, since there is a hardware difference that can't be compensated for with software.
who is right? is there anyone from brazil that has gotten a 900/1900 phone to work that could tell me how they did it, what city they're in, and what provider they use?
if it's true there is a hardware difference, is there a user-friendly way to swap out some internal part to make the bandwidth change?
any firm answers appreciated; if you are only guessing (like assuming that since wallaby bootloader mentions switching bandwidth, it's therefore possible), then please say so. i'd really like to know for sure what the story is.
thanks guys!
The 900/1900 gsm phone was never intended to work at 1800, some people manage to get signal but there are many factors involved such as proximity to mast, the fact is you are trying to use it off tune, try listening to a radio station 100mhz away from the advertised frequency and see how it sounds, if you were right next to the transmitter you would probably hear it because it would break through on to adjacent bands, but go further away and the discrepancy would become more obvious. If you need to work on 1800 get another phone or sell it and get the correct model.
hi,
let ur friend ask the operator there if they have 900 MHz signal. if yes, then all he has to do is to select this band on both GSM menu at the bootloader and in the phone settings.
good luck
Hi,
is it possible to make the sx56 or tmobile ppc phone (normally 900/1900) work on the european 1800 mhz networks as well :?:
Thank you
Yes, you need to change it in the bootloader. Just select the one that has got the band you need. Don't try to change it in the phone settings, or it won't work.
Are you sure ?
I tried what you mention and it does not connect to Telstra...
I am running a 6.25 radio and an 4.01.16 TMO rom with a 5.17 bootloader.
I tried both 900 stand alone and 900/1800 but it did not work.
Any other trick ?
Thanks,
Bob.
so, has anyone ever succeeded with activating the 1800 mhz?
It's all depending on the device type ... PW10A works only for 900/1800 ... and PW10B works only for 900/1900 .... don't try the impossible!!! ... or you may permanently damage the RSU part!!!
better to get XDA II ... it's tri-band
well, I'm planning to buy one on ebay. how can I make sure, which one it is. what should I ask the seller to look for?
Thanks
is 900/1900 not only in America ?
in that case you should ask the seller to look at his address
ok, my question is if it's possible to make the american version 900/1900 to work on 1800 mhz
most countries in EU have both 900 and 1800 support
here is a list not sure if its 100% uptodate though but i doubt people are limiting the support
http://www.celluloco.com/products/customer/pages.php?pageid=18
zsilak said:
ok, my question is if it's possible to make the american version 900/1900 to work on 1800 mhz
Click to expand...
Click to collapse
Yes, only if the network supports 900 MHz
Zsilak, it will work on 900 but not on 1800.
Hi,
this is the first time im working with with pdas so im totally new in this area. I bought one i-mate Jam and im using ok with one card provider, yesterday i change for other provider and i dont understand why my pda cant get network with this new provider.. i try to make a manual search and no information. the pda is brand new and i also contact the provider to see if is not barred and all is 100% ok... can someone knows if this can be fixed or have any ideia about this?
regards
For sure your unit is SIM locked. There are threads on how to unlock. Please do a search.
the pda is not locked becouse acept card without any problems... the only problem is dont get network of one provider.
What are OS ROM and Radio ROM versions in your unit? If it's an old one try to upgrade to the latest. There are a number of ROM's available in the FTP
Try your new SIM in other phones and see if it works ok. Also try borrowing from friends SIM of the same provider as your new SIM as well as SIMs from other providers.
The magician is a tri-band device build in two flavors:
- 850, 1800, 1900mHz
- 900, 1800, 1900mHz
Could it be the one provider which doesn't work is operating on a non-supported band?
M
hi,
i flash this pda few hours ago and i still have the same problem.. i was looking in other sites and i found something about this problem.
Exact this models have to versions:
PM10A (900-1800-1900 mhz) and PM10C (850-1800-1900mhz) and the one that i have is PM10C. I have to find one way to convert it to PM10A so then i will be able to fix this problem.
When you find the way to change a PM10C to a PM10A or vice-versa you're the man! It's hardware specific & not build in the rom :-(
M
i know someone that can make this change but dont share with no one... i cant do a lot becouse i have only PM10c in hands and i dont have any PM10A to compare the boards.
I just did a search with the keyword "850" and there are 2 pages of threads about this. All threads confirm what what OLTP mentioned - the radio frequencies are set via hardware components and no software or hack can change it. In fact, "Reo" mentioned that he modified the hardware of his unit to make it into a 900/1800/1900 MHz unit.
The 850 and 1900 MHz frequencies are used in the USA, while the 900 and 1800 MHz frequencies are used in Asia, Australia and Europe. I'm pretty sure that your new SIM supports only the 900 MHz frequency. Ask your current provider or check their website to find out what frequency they use. If your provider supports only the 900 MHz, then your last resort is to change provider again.
AT&T/Cingular are in the process of rolling out their HSDPA network and a handful of cities are using it; NOW is the Universal capable of this....I asked a similar question about the UMTS 1900 MHz being activated so it could be used in the states; Granted I was given some very good replies but I am still curious. Over the past week I have been talking to some other engineers in my field and have found that a great number of things are possible with the Universal, it has the architecture to support this, SUPPOSEDLY ! Now lets look at UMTS as a whole; then HSDPA ! HSDPA is a software upgrade to existing UMTS software, that's all ! SO is it possible that we can have HSDPA on the Universal with an upgrade to the radio stack, I think YES !...and the bands should also be able to be activate, current UMTS 2100 MHz to 1900 MHz so it becomes dual band...the other is the GSM 850 band ! That apparently can be activated !...HOW is the big questions....Most of the HTC is limited by software; not hardware...its existing hardware has been built with scalability in mind...I just hope that some one can figure out the radio stack updates to facilitate this functionality !
The current model does not support HSDPA. However, I heard that the HSDPA version is due before year-end.
The physical hardware between these three models of phones are the same, yet they have slightly different radio ROM configurations set through firmware. My issue is that the 910c I am using has UMTS 850/1900/2100 MHz capabilities and I would like to use it on T-Mobile's 3G network which uses the UMTS 2100/1700 MHz. Has anyone tried to modify the frequency multiplier to substitute either the 850 or 1900 MHz for the 1700 MHz for use with T-Mobile?
Any solution yet?
I would like to be able to use 3G also with T-Mobile and have been looking endlessly, have you found a solution yet?
Don't expect such a solution - I've never heard of a successful radio ROM mod; all radio ROMs are issued by the OEM / manufacturer.
Have a look at the Qualcomm MSM6280 chipset datasheet - it seems the frequencies are probably hardcoded.
but how's talking about some qualcomm? HP has intel inside