I didn't need the mega link, in fact I tried it once and it crashed in the end and I lost everything, then I just cloned the repository with `wget`, it went full speed without problems.
The modem is designed to be able to read all the bands and implement the appropriate multiplexing of the bands according to the protocols, the firmware mostly dictates the "legal" way to do it, for example not to give out to the user the info about other cells around you, the modem has to know it and connect to the right one.
https://opencellid.org
This is a good idea with the old phone though from the early 2000s I mostly wanted to spoof the SIM and make calls as another person just once to prove the concept.
The Quectel design is one and it is used in the RDA too and this is the reason why it accepts the at+q* commands which are Quectel specific, many commands may not be valid, for example the wi-fi commands, what I noticed is a difference in the parametres, for example the +egmr command accepts 0 to read and 1 to write but in the RDA is 1 and 2 respectively though you can list the valid parametres with `at+egmr=?`.
There are many interesting things about the global navigation that go beyond the modem, for now we focus on the modem since it covers many national systems too, in the end we will do a reverse engineering with electron microscopy like EA did back in the 90s with the SEGA cartridges and broke the IP core, these cartridges with the yellow tag, then SEGA succumbed and accepted a contract.
Correction, I just tried the +qwifi command and the modem seems to have a wi-fi, at least the wi-fi command manual in the master says that it applies for EG25!!!!
The funny thing is that when I bought the phone I was sure it was using the modem's wi-fi and then I realised it uses another chip so I reckoned there is no wi-fi on the modem, the Realtek uses some closed firmware so why don't we use the modem to reduce the number of ICs, the power consumption and the complexity ? I will give it a try.
The modem is designed to be able to read all the bands and implement the appropriate multiplexing of the bands according to the protocols, the firmware mostly dictates the "legal" way to do it, for example not to give out to the user the info about other cells around you, the modem has to know it and connect to the right one.
https://opencellid.org
This is a good idea with the old phone though from the early 2000s I mostly wanted to spoof the SIM and make calls as another person just once to prove the concept.
The Quectel design is one and it is used in the RDA too and this is the reason why it accepts the at+q* commands which are Quectel specific, many commands may not be valid, for example the wi-fi commands, what I noticed is a difference in the parametres, for example the +egmr command accepts 0 to read and 1 to write but in the RDA is 1 and 2 respectively though you can list the valid parametres with `at+egmr=?`.
There are many interesting things about the global navigation that go beyond the modem, for now we focus on the modem since it covers many national systems too, in the end we will do a reverse engineering with electron microscopy like EA did back in the 90s with the SEGA cartridges and broke the IP core, these cartridges with the yellow tag, then SEGA succumbed and accepted a contract.
Correction, I just tried the +qwifi command and the modem seems to have a wi-fi, at least the wi-fi command manual in the master says that it applies for EG25!!!!
The funny thing is that when I bought the phone I was sure it was using the modem's wi-fi and then I realised it uses another chip so I reckoned there is no wi-fi on the modem, the Realtek uses some closed firmware so why don't we use the modem to reduce the number of ICs, the power consumption and the complexity ? I will give it a try.
