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This is a complete tutorial to unlock your iPhone 3G baseband with Ultrasn0w in order to use any Sim card on your mobile. There are different steps you may have to follow in order to achieve the desired result, but currently iPhone 3G is fully exploited and you will be able to use your iPhone 3G with any carrier worldwide at the end of this 'how to'.
Many users were met various error codes when they flashing their iDevice in iTunes or 3uTools, here 3uTools summarizes some common error codes for you (some with solutions) so that users could know why the error arises and how to solve the error effectively.
Warmly Remind: Click 'Ctrl' + 'F' simultaneously, which can help you find the error code faster.
Error-1
Baseband CPU/chip/baseband output of power supply is abnormal.
(With the latest 3uTools, here is the guide for you)
Error 1
Baseband CPU problem or baseband power is not working. Here is the guide for you.
Error 2
Baseband, does not exclude power supply problem.
Error -2
You are suggested to enter DFU mode manually and try to flash again. If fail, it could be a hardware problem on your device.
Error 3
a. Baseband error when your flashing process is over 60%,
b. Chip's problem when your flashing process at 99%.
Here is the guide for you.
Error 6
Hard disk/ Chip problem when flashing process is over 60%.
Error 9
Hard disk, check power supply for it, rebooting your Mac or PC may resolve this issue.
Here is the guide for you.
Error 10
Server certification issues. Here is the guide for you.
Error 11
Firmware package is not full. Here is the guide for you.
Error 12
Firmware was closed signing. Here is the guide for you.
Error 14
Hard disk, check the resistance between hard disk and CPU. Here is the guide for you.
Error 15
Baseband, not excludes power supply problem.
Error 16
Baseband/CPU/Chip, mostly is chip problem. Here is the guide for you.
Error 17
Here is the guide for you.
Error 20
Enter DFU mode and flash again. Here is the guide for you.
Error 21 CPU/ Battery problem. Here is the guide for you.
Error 23
In software you have to set a default web browser;
In hardware, it's a communication problem. Check all connections, also try to change the battery;
Faulty baseband flash or processor;
Happens frequently after water damage. Remove and clean motherboard;
Here is the guide for you.
Error 26
Baseband/CPU/Chip. Here is the guide for you.
Error 27
Chip data does not match, please use the chip instrument to fix the chip.
Error 28
CPU or hard disk. Here is the guide for you.
Error 29
Battery problem or network problem. Here is the guide for you.
Error 31
Baseband problem.
Error 34/35/36/37
Here is the guide for you.
Error 39
Here is the guide for you.
Error -39
Error 40
Baseband, not excludes power supply problem.
Error 47
Chip problem or communicate CPU
Error 48
Baseband /Chip problem, the chip could be fixed sometimes.
Error 50
Baseband CPU breakdown.Here is the guide for you.
Error -54
Here is the guide for you.
Error 53
Touch ID fingerprint or server certification issues. Here is the guide for you.
Error 56
Baseband/CPU/Chip, mostly is NFC problem. Here is the guide for you.
Error 91
Hard disk problem.
Error 1002
Here is the guide for you.
Error 1003
Baseband or hard disk.
Error 1004
Here is the guide for you.
Error 1005
Hard disk problem, here is the guide for you.
Error 1013
Server certification issues.
Error 1015
Downgrade firmware problem, fix your PC system and flash again
Error 1600
CPU problem.
Error 1601
CPU problem.
Error 1602
USB power supply or system problem.
Error 1611
Hard disk problem.
![Download Download](https://www.3u.com//upload/20180109/1515482180196065399.png)
Error 1639
Error 1669
Chip file is incorrect or losing.
Error 2002
Check the connection with Apple server.
Error 2003
Change USB or PC.
Error 2009
Change PC, try to flash multiple times.
Error 3004
Battery, cables, USB ports not stable.
Reverse Baseband 3utools
Error 3014
Error 3049
CPU problem
Error 3194
Error 4005
Hard disk, hard disk power supply, or change another PC try again. Here is the guide for you.
Error 4013
Here is the guide for you.
Error 4014
Here is the guide for you.
Error 4015
CPU problem.
Error 0xe800006B
Reverse Baseband 3utools 2
Check USB cable, and iDevice's connection.
Error DXEXXXX
Install iTunes to your Hard disk 'C 'on your computer.
3uTools will make another tutorial if you have met other Error codes, please send us feedback kindly.
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Related Articles
Spectrum of a baseband signal, energy E per unit frequency as a function of frequency f. The total energy is the area under the curve.
Baseband is a signal that has a near-zero frequency range, i.e. a spectral magnitude that is nonzero only for frequencies in the vicinity of the origin (termed f = 0) and negligible elsewhere.[1] In telecommunications and signal processing, baseband signals are transmitted without modulation, that is, without any shift in the range of frequencies of the signal.[2] Baseband has a low-frequency—contained within the bandwidth frequency close to 0 hertz up to a higher cut-off frequency. Baseband can be synonymous with lowpass or non-modulated, and is differentiated from passband, bandpass, carrier-modulated, intermediate frequency, or radio frequency (RF).
Various uses[edit]
Baseband signal[edit]
A baseband signal or lowpass signal is a signal that can include frequencies that are very near zero, by comparison with its highest frequency (for example, a sound waveform can be considered as a baseband signal, whereas a radio signal or any other modulated signal is not).[3]
A baseband bandwidth is equal to the highest frequency of a signal or system, or an upper bound on such frequencies,[4] for example the upper cut-off frequency of a low-pass filter. By contrast, passband bandwidth is the difference between a highest frequency and a nonzero lowest frequency.
Baseband channel[edit]
A baseband channel or lowpass channel (or system, or network) is a communication channel that can transfer frequencies that are very near zero.[5] Examples are serial cables and local area networks (LANs), as opposed to passband channels such as radio frequency channels and passband filtered wires of the analog telephone network. Frequency division multiplexing (FDM) allows an analog telephone wire to carry a baseband telephone call, concurrently as one or several carrier-modulated telephone calls.
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Digital baseband transmission[edit]
Digital baseband transmission, also known as line coding,[6] aims at transferring a digital bit stream over baseband channel, typically an unfiltered wire, contrary to passband transmission, also known as carrier-modulated transmission.[7] Passband transmission makes communication possible over a bandpass filtered channel, such as the telephone network local-loop or a band-limited wireless channel.[citation needed]
Baseband transmission in Ethernet[edit]
The word 'BASE' in Ethernet physical layer standards, for example 10BASE5, 100BASE-TX and 1000BASE-SX, implies baseband digital transmission (i.e. that a line code and an unfiltered wire are used).[8][9]
Baseband processor[edit]
A baseband processor also known as BP or BBP is used to process the down-converted digital signal to retrieve essential data for the wireless digital system. The baseband processing block in GNSS receivers is usually responsible for providing observable data: code pseudo-ranges and carrier phase measurements, as well as navigation data.[citation needed]
![Reverse baseband 3utools 2 Reverse baseband 3utools 2](/uploads/1/2/5/7/125757813/977683501.jpg)
Equivalent baseband signal[edit]
An equivalent baseband signal or equivalent lowpass signal is—in analog and digital modulation methods for (band-pass) signals with constant or varying carrier frequency (for example ASK, PSKQAM, and FSK)—a complex valued representation of the modulated physical signal (the so-called passband signal or RF signal). The equivalent baseband signal is where is the inphase signal, the quadrature phase signal, and the imaginary unit. In a digital modulation method, the and signals of each modulation symbol are evident from the constellation diagram. The frequency spectrum of this signal includes negative as well as positive frequencies. The physical passband signal corresponds to
where is the carrier angular frequency in rad/s.[10]
Modulation[edit]
A signal at baseband is often used to modulate a higher frequency carrier signal in order that it may be transmitted via radio. Modulation results in shifting the signal up to much higher frequencies (radio frequencies, or RF) than it originally spanned. A key consequence of the usual double-sidebandamplitude modulation (AM) is that the range of frequencies the signal spans (its spectral bandwidth) is doubled. Thus, the RF bandwidth of a signal (measured from the lowest frequency as opposed to 0 Hz) is twice its baseband bandwidth. Steps may be taken to reduce this effect, such as single-sideband modulation. Some transmission schemes such as frequency modulation use even more bandwidth.
The figure shows what happens with AM modulation:
Comparison of the equivalent baseband version of a signal and its AM-modulated (double-sideband) RF version, showing the typical doubling of the occupied bandwidth.
See also[edit]
Look up baseband in Wiktionary, the free dictionary. |
References[edit]
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- ^Leon W. Couch II (1993). Digital and Analog Communication Systems. Prentice Hall.
- ^B.P. Lathi (1983). Modern Digital and Analog Communication Systems. Holt, Rinehart and Winston.
- ^Steven Alan Tretter (1995). Communication System Design Using Dsp Algorithms: With Laboratory Experiments for the TMS320C30. Springer. ISBN0-306-45032-1.
- ^Mischa Schwartz (1970). Information, Transmission, Modulation and Noise: A Unified Approach to Communication Systems. McGraw-Hill.
- ^Chris C. Bissell and David A. Chapman (1992). Digital Signal Transmission. Cambridge University Press. ISBN0-521-42557-3.
- ^Mikael Gustavsson and J. Jacob Wikner (2000). CMOS Data Converters for Communications. Springer. ISBN0-7923-7780-X.
- ^Jan W. M. Bergmans (1996). Digital Baseband Transmission and Recording. Springer. ISBN0-7923-9775-4.
- ^IEEE 802.3 1.2.3 Physical layer and media notation
- ^'IEEE Get Program'. standards.ieee.org. IEEE. Retrieved 29 March 2017.
- ^Proakis, John G. Digital Communications, 4th edition. McGraw-Hill, 2001. p150
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