Holger Hans Peter Freyther holger at freyther.de
Wed May 22 12:23:01 CEST 2013

| On Tue, May 21, 2013 at 03:53:45PM +0200, Arthur Léna wrote:
| > I tried booting the iPhone using 2 different SIMs (this one from
| > Free Mobile and another one) and the trace seems very short using
| > the Free Mobile in comparison to the other one. By parsing the ATRs
| > of both SIMs, I found out that the communication is done at 312500
| > bits/s with the Free Mobile SIM and only 78125 bits/s (for a clock
| > running at 5MHz). Could this explain the loss of entire ADPUs by the
| > tracer? If yes, is there a way to remedy to this problem (firmware
| > update for example).

| Some people reported success by reducing the size of buffered bytes in the
| firmware.
|   holger

Holger

There appears to be numerous references to "decrease the buffer in the firmware" to workaround the problem of losing bytes... but