For those who have Chinese FGTech Galletto 4 Master V54, here is some tips that I copied from hard/working friends that were willing to help us:
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obd R-W with temp under 50? Only on renault-bosch diesel
renault-siemens diesel dont have this strategy
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tprot on vag are present from 05/2009 but is very random this option, is most present on engine with low power and is not compeer to years or ecu type.
the best way to know if tp is active is always bootmode and read tag on file
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desold resonator, clean central hole, place a piece of ribbon or paper on central hole, resold up the quartz.
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don’t use this tools for checksum correction, there are better ways like using winols or something in that way.
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Important is also U2. You have a resistor and a cap instead of transistor and it has impact direct in bdm and bootmode.
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U2 “S5B” is the same as “ADAA”. Made by texas instruments.
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You should have only one missing resistor, 4.7kohm near U19. The rest are empty places.
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BDM timing is dependent of software and system clock (crystal or ceramic resonator), other components can’t have no effect in speed.
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ZVN and ZVP transistors are connected to OBD pins 2 and 10,
this two are used for J1850 protocol, so cars that use it, will not work (some ford e.g.)
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K-line repair consist of chips U16 and U23 both are E-L9637D
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70% of problem on this tool is not HW but SW….bad cracked and without stability (and old for v54_0386)….on HW you can play how you need.
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V54 (0386) is poor cloned version. Firmware need downgrade to V53(0475), then can use newest(11/2012) soft which is also better cracked than V54 soft.
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SN 0386 and SN 0475 both is fw53 not 54!
Difference only one… 0386 use sw from 11/2012, 0475 use sw from 12/2012 (can read/write epp in pcr2.1 ecu)
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fg 49-50-51-52 are ALWAYS v48!
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galletto eu have ONLY pcb better, nothing else!
v53_0475 china hw-sw upgraded is better
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desold resonator Y1, clean central hole, place a piece of ribbon or paper on central hole, resold up the quartz.
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Replaced Q20 with 2N7000
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usb cable from tool to computer, bad quality
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-v54 and v53 have same pcb, not the same fw, you need change fw inside LPC2119 and use v53_0475 sw
-you MUST change all components to have stable tool
-aes use the same SW and FW of v54 china, very bad!
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Pay attention to this parts on your PCB and compare with the one in this table, and if they are not like those, or like allowed one, change them with the one in table below
| U14-U9-U19 | 74HC14D nxp |
| U8-U17 | 74HCT125D nxp |
| U11-U15 | 74HC245D nxp |
| U20-U22 | MAX485ESA+ |
| U16-U23 | E-L9637D |
| U10 | PCA82C250 nxp |
| U21-U12 | LM393 |
| U18 | HEF4011BT nxp |
| Q18 | ZVP2106A |
| Q20 | ZVN2106A |
| 2 big relais | G6AK-234P ST-US 5VDC |
| 1 small relay | G5V-1 5VDC |
| Y1 | quartz 16 mhz |
| c21-c26-c28 | 100uF 50V |
| the other 7 capacitor | 10uF 50V |